Are wheels poking out of arches illegal?

[Anonymous]

Ah the joy of 'yoof'..you can't beat that unbridled enthusiasm /naivety not letting old duffers with 'facts' get in the way of a vision! :rofl: :driving: :tumbleweed:

 

[Mister T]

Thanks for all the help so far, i planned to run 225, 40 on the front and 255, 35 on the rears, so hopefully shouldnt be too crazy a fit. Regarding rubbing etc the car isnt lowered as is, and looks to clear everything from my test fit, however im open to trimming/rolling if it does need it. The question was more on the legality rather than if it will actually fit

Does anyone have a link to a gov/police website regarding what makes wheels illegal?

You'll be fine with those tyre sizes, they aren't even close to being stretched.

I think not..

The 225 falls off the scale below the possible minimum size..you need a 235 at a minimum and preferably 245/255

For the rear 255 is just on the edge of acceptable but the recomended fit is 265/275

https://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart

https://www.tyres-pneus-online.co.uk/tyre-equivalence-advice.html

refer

So your front tyre choice is 'illegal' , your rear tyre choice is 'not good practice'

As to the alloy sizes /offset they fall into the 'not good practice'

The ususal conversation revolves between the 'doom sayers' aka moi and the other group..

For me when you run over the kid who, through no fault of your own, runs out in front of you and is left with life changing injuries, then the insurnace guys will be looking for a way out and you've handed it to them on the plate..

Whether the CPS would persue it under normal circumstances is very unlikely..VOSA advice here refers to the insurrance aspects..

You'll be fine with those tyre sizes, they aren't even close to being stretched.

I think not..

The 225 falls off the scale below the possible minimum size..you need a 235 at a minimum and preferably 245/255

For the rear 255 is just on the edge of acceptable but the recomended fit is 265/275

https://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart

https://www.tyres-pneus-online.co.uk/tyre-equivalence-advice.html

refer

So your front tyre choice is 'illegal' , your rear tyre choice is 'not good practice'

As to the alloy sizes /offset they fall into the 'not good practice'

The ususal conversation revolves between the 'doom sayers' aka moi and the other group..

For me when you run over the kid who, through no fault of your own, runs out in front of you and is left with life changing injuries, then the insurnace guys will be looking for a way out and you've handed it to them on the plate..

Whether the CPS would persue it under normal circumstances is very unlikely..VOSA advice here refers to the insurrance aspects..

https://mattersoftesting.blog.gov.uk/stretched-tyres-an-mot-failure/

https://mattersoftesting.blog.gov.uk/stretched-tyres-an-mot-failure/

225/40/18 is approved by the European Tire and Rim Technical Organization (ETRTO) for use on a 9J wheel.

So definitely not illegal.

 

[Boltz]

[youtube]nqqZ28m8uCo[/youtube]

Thanks for posting this up it’s made my day Showing my age now!!!

 

[Anonymous]

wheel.

Hello..since you can’t seem to access the data on the site, I’ll take the public domain advice...

You'll be fine with those tyre sizes, they aren't even close to being stretched.

I think not..

The 225 falls off the scale below the possible minimum size..you need a 235 at a minimum and preferably 245/255

For the rear 255 is just on the edge of acceptable but the recomended fit is 265/275

https://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart

https://www.tyres-pneus-online.co.uk/tyre-equivalence-advice.html

refer

So your front tyre choice is 'illegal' , your rear tyre choice is 'not good practice'

As to the alloy sizes /offset they fall into the 'not good practice'

The ususal conversation revolves between the 'doom sayers' aka moi and the other group..

For me when you run over the kid who, through no fault of your own, runs out in front of you and is left with life changing injuries, then the insurnace guys will be looking for a way out and you've handed it to them on the plate..

Whether the CPS would persue it under normal circumstances is very unlikely..VOSA advice here refers to the insurrance aspects..

I think not..

The 225 falls off the scale below the possible minimum size..you need a 235 at a minimum and preferably 245/255

For the rear 255 is just on the edge of acceptable but the recomended fit is 265/275

https://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart

https://www.tyres-pneus-online.co.uk/tyre-equivalence-advice.html

refer

So your front tyre choice is 'illegal' , your rear tyre choice is 'not good practice'

As to the alloy sizes /offset they fall into the 'not good practice'

The ususal conversation revolves between the 'doom sayers' aka moi and the other group..

For me when you run over the kid who, through no fault of your own, runs out in front of you and is left with life changing injuries, then the insurnace guys will be looking for a way out and you've handed it to them on the plate..

Whether the CPS would persue it under normal circumstances is very unlikely..VOSA advice here refers to the insurrance aspects..

https://mattersoftesting.blog.gov.uk/stretched-tyres-an-mot-failure/

https://mattersoftesting.blog.gov.uk/stretched-tyres-an-mot-failure/

225/40/18 is approved by the European Tire and Rim Technical Organization (ETRTO) for use on a 9J wheel.

So definitely not illegal.

Thank you can you provide the link to said information please?

 

[Mister T]

wheel.

Hello..since you can’t seem to access the data on the site, I’ll take the public domain advice...

I think not..

The 225 falls off the scale below the possible minimum size..you need a 235 at a minimum and preferably 245/255

For the rear 255 is just on the edge of acceptable but the recomended fit is 265/275

https://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart

https://www.tyres-pneus-online.co.uk/tyre-equivalence-advice.html

refer

So your front tyre choice is 'illegal' , your rear tyre choice is 'not good practice'

As to the alloy sizes /offset they fall into the 'not good practice'

The ususal conversation revolves between the 'doom sayers' aka moi and the other group..

For me when you run over the kid who, through no fault of your own, runs out in front of you and is left with life changing injuries, then the insurnace guys will be looking for a way out and you've handed it to them on the plate..

Whether the CPS would persue it under normal circumstances is very unlikely..VOSA advice here refers to the insurrance aspects..

https://mattersoftesting.blog.gov.uk/stretched-tyres-an-mot-failure/

225/40/18 is approved by the European Tire and Rim Technical Organization (ETRTO) for use on a 9J wheel.

So definitely not illegal.

Thank you can you provide the link to said information please?

Yes you would have to pay for a copy, but lots of tyre manufacturers do publish the information.

https://www.nankangtyre.co.uk/assets/5681d4133c/Nankang-rim-width-March-2018-Nankang-only-sizes-portrait.pdf

https://www.google.com/url?sa=t&source=web&rct=j&url=https://blobs.continental-tires.com/www8/servlet/blob/585550/e0854f2c7866c64da551474b998ef8b3/download-technical-databook-data.pdf&ved=2ahUKEwjxhP7-5NfrAhWGy6QKHTKcB7kQFjAAegQICBAB&usg=AOvVaw2RAAjXnxHU4UWGjYAgq-AV

 

[tomttengine]

Are they like these? 8)

https://www.zpost.com/forums/showthread.php?t=1441366

If they are then that's a great place to work back from as they are fitted to a ZM not a Si so that works in favour of the M with regards width & offset

Yes, theyre these wheels exactly, just obviously with smaller sizing. Appreciate alot of the crowd commenting probably arent huge into modifying, but as before stated there are people running 11 inch rears on our cars with similar offset on air/coils, some trimming of the liner and very little camber.

Heres a link to an absolutely crazy set up, where the only noticeable camber is on the rears

https://www.fitmentindustries.com/wheel-offset-gallery/779460/2003-bmw-z4-rota-slipstreams-bags-by-only-charged-dubs-air-suspension

 

[Anonymous]

wheel.

Hello..since you can’t seem to access the data on the site, I’ll take the public domain advice...

225/40/18 is approved by the European Tire and Rim Technical Organization (ETRTO) for use on a 9J wheel.

So definitely not illegal.

Thank you can you provide the link to said information please?

Yes you would have to pay for a copy, but lots of tyre manufacturers do publish the information.

https://www.nankangtyre.co.uk/assets/5681d4133c/Nankang-rim-width-March-2018-Nankang-only-sizes-portrait.pdf

https://www.google.com/url?sa=t&source=web&rct=j&url=https://blobs.continental-tires.com/www8/servlet/blob/585550/e0854f2c7866c64da551474b998ef8b3/download-technical-databook-data.pdf&ved=2ahUKEwjxhP7-5NfrAhWGy6QKHTKcB7kQFjAAegQICBAB&usg=AOvVaw2RAAjXnxHU4UWGjYAgq-AV

Interesting thnx..although the specific combination quoted indeed is acceptable to both manufacturers, I see at other sizes of tyre it’s not supported so it’s clearly on the edge..

 

[Argyll Andy]

Are they like these? 8)

https://www.zpost.com/forums/showthread.php?t=1441366

If they are then that's a great place to work back from as they are fitted to a ZM not a Si so that works in favour of the M with regards width & offset

Yes, theyre these wheels exactly, just obviously with smaller sizing. Appreciate alot of the crowd commenting probably arent huge into modifying, but as before stated there are people running 11 inch rears on our cars with similar offset on air/coils, some trimming of the liner and very little camber.

Heres a link to an absolutely crazy set up, where the only noticeable camber is on the rears

https://www.fitmentindustries.com/wheel-offset-gallery/779460/2003-bmw-z4-rota-slipstreams-bags-by-only-charged-dubs-air-suspension

That’s a forum car, same username on here

 

[brillomaster]

this is the sheet i generally use for tyre sizes and widths

https://lvvta.org.nz/documents/infosheets/LVVTA_Info_01-2009_V3_Tyre_Size_to_Wheel_Size_Compatibility_Guide.pdf

thats how i decided a 245/35/R18 would fit on a 8" rim, despite quite a few people thinking it would be too wide!

but yeah, 225/40/R18 is fine on a 9" rim. step up to 225/45/R18 and that drops to an 8.5", and a 225/50/R18 the max is 8".

 

[ben g]

Thanks for all the help so far, i planned to run 225, 40 on the front and 255, 35 on the rears, so hopefully shouldnt be too crazy a fit. Regarding rubbing etc the car isnt lowered as is, and looks to clear everything from my test fit, however im open to trimming/rolling if it does need it. The question was more on the legality rather than if it will actually fit

Does anyone have a link to a gov/police website regarding what makes wheels illegal?

I had 255/30 on my 19x10 rear alloys years ago and they were fine, even when lowered on eibach springs. I think the offset was 35, so obviously a lot higher than yours, but the actual stretch on the tyres wasn't a problem.

 

[Z4C_er]

So, according to the law, yes, they are illegal. OEMs must adhere to strict requirements regarding wheel coverage:

That's why you see little features like this to get around the requirement:

 

[BTZ461]

this is the sheet i generally use for tyre sizes and widths

https://lvvta.org.nz/documents/infosheets/LVVTA_Info_01-2009_V3_Tyre_Size_to_Wheel_Size_Compatibility_Guide.pdf

thats how i decided a 245/35/R18 would fit on a 8" rim, despite quite a few people thinking it would be too wide!

but yeah, 225/40/R18 is fine on a 9" rim. step up to 225/45/R18 and that drops to an 8.5", and a 225/50/R18 the max is 8".

That is a NZ Land Transport doco. Also known as the Ministry of Misinformation. Hardly best practice using that, the LVTA are so wide off the mark most of the time. Your best source of info is the tyre manufacturers. they will have min / max rim widthsfor all sizes. Your 245 / 35 on an 8 inch rim would have been like a wobbly jelly on a dessert spoon :?
And not made driving your car at speed very safe on the road.

 

[Liam22]

If it looks wrong, it is wrong.

(which is also the mindset of the Police and MoT testers)

 

[Armscarf]

I withdraw my previous comment about having 30mm to play with, this appears to be an urban myth. UK law on this matter will often refer out to other Government approved documentation such as Type Approval, testing standards etc. For UK legal questions have a look at this; https://www.legislation.gov.uk/ukpga/1988/52/contents I don't have time to dig into it to get the answer for these wheels on a Z4 but would be interested if anyone has the time to join all the official dots together.

I'm not a modifier, bit old for all that, but if I had some advice I'd keep the dream wheels and bite the modding bullet and have the arches modified to accommodate them. Expensive but I reckon it would look amazing.

 

[brillomaster]

this is the sheet i generally use for tyre sizes and widths

https://lvvta.org.nz/documents/infosheets/LVVTA_Info_01-2009_V3_Tyre_Size_to_Wheel_Size_Compatibility_Guide.pdf

thats how i decided a 245/35/R18 would fit on a 8" rim, despite quite a few people thinking it would be too wide!

but yeah, 225/40/R18 is fine on a 9" rim. step up to 225/45/R18 and that drops to an 8.5", and a 225/50/R18 the max is 8".

That is a NZ Land Transport doco. Also known as the Ministry of Misinformation. Hardly best practice using that, the LVTA are so wide off the mark most of the time. Your best source of info is the tyre manufacturers. they will have min / max rim widthsfor all sizes. Your 245 / 35 on an 8 inch rim would have been like a wobbly jelly on a dessert spoon :?
And not made driving your car at speed very safe on the road.

thats what i've been running on my track car for years, and it was great! but even if the NZ site is a bit suspect, federal approve of that size too:
https://www.federaltire.com/spec/spec.php?type=eur&model=595RS-R

 

[Mister T]

I withdraw my previous comment about having 30mm to play with, this appears to be an urban myth. UK law on this matter will often refer out to other Government approved documentation such as Type Approval, testing standards etc. For UK legal questions have a look at this; https://www.legislation.gov.uk/ukpga/1988/52/contents I don't have time to dig into it to get the answer for these wheels on a Z4 but would be interested if anyone has the time to join all the official dots together.

I'm not a modifier, bit old for all that, but if I had some advice I'd keep the dream wheels and bite the modding bullet and have the arches modified to accommodate them. Expensive but I reckon it would look amazing.

The 30mm thing actually comes from The Motor Vehicles (Approval) Regulations 1996 (Section 18).

(d) wheels, if there are no pointed or sharp features which projects beyond the external plane of the wheel rim, no wing nuts are fitted and there are no projections beyond the vehicle body plan form apart from tyres and wheel discs, if the latter have a radius of curvature of not less than 30 mm and do not project by more than 30 mm beyond the vehicle body plan form;

 

[tomttengine]

Thanks for all the help so far, i planned to run 225, 40 on the front and 255, 35 on the rears, so hopefully shouldnt be too crazy a fit. Regarding rubbing etc the car isnt lowered as is, and looks to clear everything from my test fit, however im open to trimming/rolling if it does need it. The question was more on the legality rather than if it will actually fit

Does anyone have a link to a gov/police website regarding what makes wheels illegal?

I had 255/30 on my 19x10 rear alloys years ago and they were fine, even when lowered on eibach springs. I think the offset was 35, so obviously a lot higher than yours, but the actual stretch on the tyres wasn't a problem.

_20200908_203744.JPG

These look to fit really well, any other changes to the arches/camber?

 

[ben g]

Thanks for all the help so far, i planned to run 225, 40 on the front and 255, 35 on the rears, so hopefully shouldnt be too crazy a fit. Regarding rubbing etc the car isnt lowered as is, and looks to clear everything from my test fit, however im open to trimming/rolling if it does need it. The question was more on the legality rather than if it will actually fit

Does anyone have a link to a gov/police website regarding what makes wheels illegal?

I had 255/30 on my 19x10 rear alloys years ago and they were fine, even when lowered on eibach springs. I think the offset was 35, so obviously a lot higher than yours, but the actual stretch on the tyres wasn't a problem.

_20200908_203744.JPG

These look to fit really well, any other changes to the arches/camber?

No changes to the arches, but I think it was -2.5 degrees of camber on the rear. It did tend to eat the inside edge of the tyres.

 

[Darkangelv2]

So, according to the law, yes, they are illegal. OEMs must adhere to strict requirements regarding wheel coverage:
wg.JPG

Where did this law come from? Often is the case that the legal requirements of manufacturing/selling are different to road worthiness laws that apply to us muggles!

 

[Z4C_er]

So, according to the law, yes, they are illegal. OEMs must adhere to strict requirements regarding wheel coverage:
wg.JPG

Where did this law come from? Often is the case that the legal requirements of manufacturing/selling are different to road worthiness laws that apply to us muggles!

This is EU law, and is applied to all vehicles being designed and to be driven on EU roads. This law, AFAIK, is applicable universally.