Non Runflat Tyres (RFT) Options for a puncture

[mickl86]

If I am looking for a spare wheel, 17" is the way I would have to go having the 3.0, so would the spec of the wheel be the same as a 5 series BMW?

17inch 135/80?

or am I looking for 3 series 17"?

Cheers.

interested in the answer to this as well

cheers

 

[kis]

If I am looking for a spare wheel, 17" is the way I would have to go having the 3.0, so would the spec of the wheel be the same as a 5 series BMW?

17inch 135/80?

or am I looking for 3 series 17"?

Cheers.

So I came across your message and thought I'd answer a very old question in the hope someone can answer mine.
So standard Z4 is 225/40/r18 and 255/35/r18 for the staggered 18" set up. You can work out dimensions from these measurements. To cut a long story short I've done the measurements and they pretty much tally up perfectly with a few mm out. Negligible. This is for the set up you've suggested 135/80/r17. So it makes an ideal spare.

Secondly it may not always be necessary that a 3.0 needs to have 17" to clear the calliper. I think that 3.0i is okay (I know for sure because that's what I have). The 3.0si is the one with larger brakes, so larger calliper, so will require the 17" on these.

My question is for 16" space saver tyres. I've got a 115/90/r16 that I could use as my space saver. Only thing is that measurements don't tally up so perfectly and they don't do any other sizes similar. I'd have to opt for 135/90/r16. So increasing the width by 20mm would it cause issues?

Alternatively am I better sticking to the stock wheel and tyre (115/90/r16) even though the diameter between the 18's and the space saver has a difference in approx. 30mm? Or again is this negligible due to the fact it's only going to be used temporarily anyway?

Thoughts, comments and insight appreciated! Cheers.

 

[MJJamieson]

I use this Slime kit,https://www.amazon.co.uk/Slime-1800330-Repair-Automobile-Dispensor/dp/B003QHY000/ref=sr_1_1?ie=UTF8&qid=1469732168&sr=8-1&keywords=slime+tyre+kit, fits nicely beside the battery as per OEM.

 

[jakblade]

By law can you carry a can of sealant and pass an MOT with non runflats?

I've had mine through 2 MOT's with non rft's with no issues whatsoever.

 

[Paulwirral]

First thing I did when I bought a z4 was buy a new space saver and tyre , if you do any sort of mileage , especially in mainland Europe it's a no brainer , if your half competent with basic tools you'll change to the spare and be on your way . Although your passenger will be sat with the spare on their lap , hope it's a front !

 

[Mr Tidy]

First thing I did when I bought a z4 was buy a new space saver and tyre , if you do any sort of mileage , especially in mainland Europe it's a no brainer , if your half competent with basic tools you'll change to the spare and be on your way . Although your passenger will be sat with the spare on their lap , hope it's a front !

I knew there was a reason I bought a Coupe - I'm sure I could get a wheel in the boot!

 

[Mr Tidy]

If I am looking for a spare wheel, 17" is the way I would have to go having the 3.0, so would the spec of the wheel be the same as a 5 series BMW?

17inch 135/80?

or am I looking for 3 series 17"?

Cheers.

So I came across your message and thought I'd answer a very old question in the hope someone can answer mine.
So standard Z4 is 225/40/r18 and 255/35/r18 for the staggered 18" set up. You can work out dimensions from these measurements. To cut a long story short I've done the measurements and they pretty much tally up perfectly with a few mm out. Negligible. This is for the set up you've suggested 135/80/r17. So it makes an ideal spare.

Secondly it may not always be necessary that a 3.0 needs to have 17" to clear the calliper. I think that 3.0i is okay (I know for sure because that's what I have). The 3.0si is the one with larger brakes, so larger calliper, so will require the 17" on these.

My question is for 16" space saver tyres. I've got a 115/90/r16 that I could use as my space saver. Only thing is that measurements don't tally up so perfectly and they don't do any other sizes similar. I'd have to opt for 135/90/r16. So increasing the width by 20mm would it cause issues?

Alternatively am I better sticking to the stock wheel and tyre (115/90/r16) even though the diameter between the 18's and the space saver has a difference in approx. 30mm? Or again is this negligible due to the fact it's only going to be used temporarily anyway?

Thoughts, comments and insight appreciated! Cheers.

Interesting thread as I'm thinking of possibly putting non-RFTs on mine when I need to replace tyres.

A 125/80r17 would look like the nearest match as far as I can tell - plus it would hopefully fit any 3.0, SE or Si!

 

[kis]

Has anyone actually ever had to use a kit like these?

Holts
You can buy something like Holts Tyreweld from Halfords, Tesco offer at very good prices some times as well. The cans aren't too big so I carried two.

Fits nicely away in the battery box, that's two cans in there (if you haven't done a custom exhaust mod).

BMW
A similar solution is the BMW mobility kit, as supplied with the M. The mobility kit is a small compressor, powered by the cigar lighter, and an inline bottle of tyre sealant. In the picture below you can see the instructions.

I bought mine from eBay - I think it is usually supplied in a bag. Again, it fits nicely in the battery compartment.

or

I use this Slime kit,https://www.amazon.co.uk/Slime-1800330-Repair-Automobile-Dispensor/dp/B003QHY000/ref=sr_1_1?ie=UTF8&qid=1469732168&sr=8-1&keywords=slime+tyre+kit, fits nicely beside the battery as per OEM.

Be interesting to see how good/bad they perform?

 

[Paulwirral]

First thing I did when I bought a z4 was buy a new space saver and tyre , if you do any sort of mileage , especially in mainland Europe it's a no brainer , if your half competent with basic tools you'll change to the spare and be on your way . Although your passenger will be sat with the spare on their lap , hope it's a front !

I knew there was a reason I bought a Coupe - I'm sure I could get a wheel in the boot!

With your luggage on a 2 week holiday ? at least you could tie it on the roof that doesn't retract

 

[kis]

First thing I did when I bought a z4 was buy a new space saver and tyre , if you do any sort of mileage , especially in mainland Europe it's a no brainer , if your half competent with basic tools you'll change to the spare and be on your way . Although your passenger will be sat with the spare on their lap , hope it's a front !

I think I'll be going down this route. For the simple reason I know I can rely on myself to sort it out. Tyre sealant is hit and miss. I've had a blow out before and it's split all along the sidewall - no chance a repair kit can even temporarily repair that.



Also I agree that a 125/80/r17 would acutally be a better fit than a 135/80/r17 as Mr Tidy quite rightly pointed out.

Interesting thread as I'm thinking of possibly putting non-RFTs on mine when I need to replace tyres.

A 125/80r17 would look like the nearest match as far as I can tell - plus it would hopefully fit any 3.0, SE or Si!

 

[Mr Tidy]

I think I'll be going down this route. For the simple reason I know I can rely on myself to sort it out. Tyre sealant is hit and miss. I've had a blow out before and it's split all along the sidewall - no chance a repair kit can even temporarily repair that.

IMG_1569.JPG

Also I agree that a 125/80/r17 would acutally be a better fit than a 135/80/r17 as Mr Tidy quite rightly pointed out.

TBH I would love to try my Z4 on non-RFTs, but your photo is what puts me off!

I suppose I really should get a space-saver if I want to try non-RFTs - the saving over RFTs would probably pay for the space-saver anyway! :lol:

 

[kis]

TBH I would love to try my Z4 on non-RFTs, but your photo is what puts me off!

I suppose I really should get a space-saver if I want to try non-RFTs - the saving over RFTs would probably pay for the space-saver anyway! :lol:

Nah that wasn't the Zed! It was my brothers Mini Cooper I was driving at the time. Was a motorway puncture. If you look in the top left (ish) I think that's where it 'burst' the long split is from driving on the tyre?? I think!

Not too sure on brand or anything either. Maybe it was a cheap-o. If you go with a decent brand, you're generally okay.

Hope that puts your mind at ease! Back to non RFT's!

 

[Havard]

Has anyone had a puncture and tried to use one of these kits. I had a Volvo V60 that end over a small nail. Tried the inflation kit and the stuff just came out of the hole and did nothing but run down the street.

One thing I may have got wrong was puncturing the bottle, before I put it in the compressor. How much of a difference this could possibly make is a mystery but it does show the bottle being placed in the compressor with a sealed lid.

Either way, I just got decent Greenflag cover as I have no faith in these kits.

H.