BMW E85 and E86 Wheels and Tyres Thread

[Mr Tidy]

I don't know for sure, but according to this website they should be OK:- https://www.tyresizecalculator.com/charts/rim-width-range-and-measuring-rim-width-for-tire-size

They may look a bit stretched on 224s though.

 

[mr wilks]

yes.

Although 108s would have had 225/40 x 18 fronts and 255/35 x 18 rears, but 224s on an M would have had 225/45 fronts and 255/40 rears.

okay just to complicate things

I have 215/45 R18 (fronts) and 245 40 R18 (rears)

Will these fit on 224's? or will I need to put them on the 108's?

It's a 3.0 with M sport suspension.

215 45 18 & 245 40 18 onto 224s onto non M Z4 will fit & look absolutely fine .
As attached pic on non ///M Z C

 

[SonnyA85]

Although 108s would have had 225/40 x 18 fronts and 255/35 x 18 rears, but 224s on an M would have had 225/45 fronts and 255/40 rears.

okay just to complicate things

I have 215/45 R18 (fronts) and 245 40 R18 (rears)

Will these fit on 224's? or will I need to put them on the 108's?

It's a 3.0 with M sport suspension.

215 45 18 & 245 40 18 onto 224s onto non M Z4 will fit & look absolutely fine .
As attached pic on non ///M Z C

Nice looking car. Thanks for confirmation. Could I go even higher profile next time around or is this the max on both front and rear?

 

[Mr Tidy]

Could I go even higher profile next time around or is this the max on both front and rear?

You possibly could - I have 224s on my car with 255/45 tyres on the rear, but Ms are designed for 224s which have a different offset especially on the rear.

 

[SonnyA85]

Could I go even higher profile next time around or is this the max on both front and rear?

You possibly could - I have 224s on my car with 255/45 tyres on the rear, but Ms are designed for 224s which have a different offset especially on the rear.

I'll ask the tyre fitters when I am there next week and see what they think. I will need to do a full rear suspension refresh next year anyway. The springs are okay I think the shocks are likely gone.

 

[Griffo46]

I found this thread so informative and helpful. I’m looking for the right tyres to replace my run flats after only just discovering I have them. I realise it’s actually a big decision due to performance, enjoyment and importantly, cost!

 

[SonnyA85]

I found this thread so informative and helpful. I’m looking for the right tyres to replace my run flats after only just discovering I have them. I realise it’s actually a big decision due to performance, enjoyment and importantly, cost!

If you want a softer ride you can always size up the profile and size down on the width to help try and prevent rubbing.

The harsh ride on the m sport suspension can be an issue with potholes and rough roads.

 

[Griffo46]

Yes good point, I found it interesting that I can put 215’s on the front instead of 225’s! Same for rears too of course. I’d like to see a set of wheels the same as mine with narrower tyres

 

[Panta Rhei]

225/40/18 on a 8J rim is streched so watch out for 215.
As a reference - 255 on a 8,5J is a 100% perfect match with tyre being nearly rectangular from behind. Perfect rim protection also, but more importantly - the looks!
Leave streched tyres to Civic owners.
More examples:
245 ona a 8J
275 on a 9J

 

[mr wilks]

225/40/18 on a 8J rim is streched so watch out for 215.
As a reference - 255 on a 8,5J is a 100% perfect match with tyre being nearly rectangular from behind. Perfect rim protection also, but more importantly - the looks!
Leave streched tyres to Civic owners.
More examples:
245 ona a 8J
275 on a 9J

" 225 on a 8j stretched " ? :? its classed as the ideal size & bear in mind the 215 suggestion is with a 45 profile as opposed to a 40 so there is no issue with it looking the least bit out of place or " stretched "



Rim width Min tyre Ideal tyre Maximum tyre

7.0 Inches 195 mm 205 or 215 mm 225 mm
7.5 Inches 205 mm 215 or 225 mm 235 mm
8.0 Inches 215 mm 225 or 235 mm 245 mm
8.5 Inches 225 mm 235 or 245 mm 255 mm
9.0 Inches 235 mm 245 or 255 mm 265 mm

 

[SonnyA85]

225/40/18 on a 8J rim is streched so watch out for 215.
As a reference - 255 on a 8,5J is a 100% perfect match with tyre being nearly rectangular from behind. Perfect rim protection also, but more importantly - the looks!
Leave streched tyres to Civic owners.
More examples:
245 ona a 8J
275 on a 9J

" 225 on a 8j stretched " ? :? its classed as the ideal size & bear in mind the 215 suggestion is with a 45 profile as opposed to a 40 so there is no issue with it looking the least bit out of place or " stretched "



Rim width Min tyre Ideal tyre Maximum tyre

7.0 Inches 195 mm 205 or 215 mm 225 mm
7.5 Inches 205 mm 215 or 225 mm 235 mm
8.0 Inches 215 mm 225 or 235 mm 245 mm
8.5 Inches 225 mm 235 or 245 mm 255 mm
9.0 Inches 235 mm 245 or 255 mm 265 mm

I'll need to save this list somewhere for the next time I have to get new rubber.

Apart from the obvious, fuel consumption, chance of rubbing, etc I take it there are no real negatives to the widest tyre possible?

It's why when I went up a profile I went down a bit on width to prevent rubbing or to make it less of an issue as it would have been with a slightly wider tyre.

The only regret is I may lose some rim protection.

 

[Griffo46]

All great ideas for utilising different tyres sizes. I’m shocked by the price difference of these tyres, for example, I went on to a tyre site, picked a standard tyre and then looked at all 3 sizes that I’d be interested in.

Michelin Pilot sport 4 - 225/40/18 = £107 each
Michelin pilot sport 4 - 215/40/18 = £161 each
Michelin pilot sport 4 - 215/45/18 = £174 each

The cheapest tyre above is the existing tyre size I already have on the car, so I may opt for that one. Why would that size be so cheaper?

 

[jamie_z4]

225/40/18 on a 8J rim is streched so watch out for 215.
As a reference - 255 on a 8,5J is a 100% perfect match with tyre being nearly rectangular from behind. Perfect rim protection also, but more importantly - the looks!
Leave streched tyres to Civic owners.
More examples:
245 ona a 8J
275 on a 9J

LOL so bmw are fitting stretch tyres are they? As from factory the mv1/108 come with 225 tyres on an 8j rim

 

[Panta Rhei]

You can laugh all you want, but 225 on 8J is little stretched and you can see that. Nothing wrong with a little strech, but it is a fact that they are.
255 on 8,5 are not.
BMW also puts 245 on 8J (f10 for example and their styling 613) and what that proves? They know their job, but fact is a fact.
235 - 245 on 8J looks much better.

 

[mmm-five]

Why would that size be so cheaper?

Less common sizes are more expensive!

 

[Griffo46]

Why would that size be so cheaper?

Less common sizes are more expensive!

That's why I'm such a commoner then, I prefer the cheaper tyres! Thanks for your feedback!

 

[SonnyA85]

All great ideas for utilising different tyres sizes. I’m shocked by the price difference of these tyres, for example, I went on to a tyre site, picked a standard tyre and then looked at all 3 sizes that I’d be interested in.

Michelin Pilot sport 4 - 225/40/18 = £107 each
Michelin pilot sport 4 - 215/40/18 = £161 each
Michelin pilot sport 4 - 215/45/18 = £174 each

The cheapest tyre above is the existing tyre size I already have on the car, so I may opt for that one. Why would that size be so cheaper?

Car manufacturers strike deals with tyre companies so they keep making tyres for their cars for the normal life of the car.

So for instance bmw will approach
one of Goodyear, continental, Dunlop and Michelin and say we need this size of tyre for the next 10 years for the new 3 series.

After that they have no obligation and therefore less supply means that in demand tyres in those sizes become very expensive. Unless of course for instance another company like Mercedes decides to use that size of tyre in their new c class.

Also the obvious the more rubber, technology and r&d that goes into a tyre the more expensive they are also.

It's good to compare sizes across different manufacturers for that reason. Compare those sizes in Goodyear eagle F1 for instance and see what the difference is

 

[WouterZZZZ]

Fellow Z4 fans, I just mounted Michelin Pilot Sport 5 tyres 225/45/17 94Y in extra load (XL) type. In one word: fantastic! Direct steering, sticky to the road, acceptable noise, very good feedback. No tramlining or whatsoever.

The stiffer side walls because of the XL, make the car very good to handle in corners. A very nice tyre to see (!), but that is off course a matter of ‘personal taste’.

These tyres can absorbate and transform the 265 horse powers to the road at ease.
At last they are comfortable as well despite the XL.

 

[Griffo46]

Fellow Z4 fans, I just mounted Michelin Pilot Sport 5 tyres 225/45/17 94Y in extra load (XL) type. In one word: fantastic! Direct steering, sticky to the road, acceptable noise, very good feedback. No tramlining or whatsoever.

The stiffer side walls because of the XL, make the car very good to handle in corners. A very nice tyre to see (!), but that is off course a matter of ‘personal taste’.

These tyres can absorbate and transform the 265 horse powers to the road at ease.
At last they are comfortable as well despite the XL.

Nice update and great to hear how they have transformed your ride quality. They are on my to do list, can’t wait tbh!

 

[WouterZZZZ]

Thanks, you will not regret mounting them yourself, let us know your experiences afterwards. Friendly greetings from The Netherlands.