Wheels & Tyres FAQ- please read before posting

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130girl
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Wheels & Tyres FAQ- please read before posting

Postby 130girl » Sun Apr 01, 2007 11:41 pm

Wheels and Tyres
Frequently Asked Questions (FAQ)
Updated: 1 May 2007

Introduction

Hi everyone. Members are often asking the same questions on wheels and tyres so I have compiled the following FAQ for this topic based on what members have posted.

1. What are the standard wheel and tyre sizes for BMW 1er?

7JX16 ET:44 .......... for 205/55/16 tyres
61/2JX16 ET:42 ..... for 195/55/16 tyres

7JX17 ET:47 .......... for 205/50/17 tyres
71/2JX17 ET:47 ..... for 225/45/17 tyres (only rear)

71/2JX18 ET:47 ..... for 205/45/18 tyres (front)
8JX18 ET:49 .......... for 225/40/18 tyres (rear)

2. What do the different BMW OEM 1er wheel styles look like?

See this site.

3. What is the stud pattern for the 1er?

pcd is 5/120

4. Can I replace my RunFlat Tyres ("RFT") with conventional non RFTs on my BMW OEM wheels?

This is a highly contentious issue. From a practical perspective, the answer is yes, however 1er owners should satisfy themselves regarding:

a. Your BMW warranty. It appears that using non RFT at least voids your BMW warranty in relation to anything related to the use of non RFTs.

b. Your insurance. ie that your insurance company does not consider using non RFT on a 1er to be a modification which voids or otherwise creates an exception to your policy. The general consensus appears to be that non RFT are not considered a modification to your 1er that changes your insurance.

c. Legal requirements. Are there any relevant legal requirements in your jurisdiction to carry equipment to deal with any flat? Regardless, owners should consider how to deal with flats from a practical point of view.

d. Your safety. Cars fitted with RFT generally have greater control after any (especially sudden) loss of tyre pressure at speed.

The run flat tyre indicator works fine with non RFT as the 1er uses an indirect monitoring system. Don't forget to reset it per the 1er owners manual.

5. OK, I've decided to get non RFT- what do I do about any flat tyres?

Try using the BMW Mobility Kit (see here) or use a similar third party product.

6. I cannot find 18" non RFT that are identical to OEM spec- what can I use?

Widest specs that keep the speedometer as accurate as possible and understeer/oversteer bias with no guard rubbing is 225 40 18 front and 245 35 18 rear (see here). Those wanting more oversteer bias may consider 225 40 18 for both front and rear.

7. Will 255 tyres fit on the rear?

Tyre manufacturers generally specify that 255 tyres are too wide for all wheels up to and including 8” in width. However, TUV has certified some 255 tyres for use with 8" wide wheels. See here. Members generally report no rubbing issues for 255 tyres on the standard BMW 18" 208M wheels.

8. What tyres should I use?

Depends on your priorities. See here for a recent tyre comparison using the 3er.

9. What non RFT are BabyBMW members putting on their 1ers?

Pirelli P Zero Rosso
225 40 18 and 255 35 18 (Roofer)
225 40 18 both front and rear (Vasalis, Pilsbury)

Continental Contact Sport 2
205 50 17 and 225 45 17 (Rumple and here)
225 40 18 and 245 35 18 (Iwant1)
225 35 19 and 235 35 19 (minfred)

Michelin PS2
225 40 18 both front and rear (Ghibbett and Woms)

Goodyear Eagle F1 GS-D3
225 40 18 and 245 35 18 (Scottie)

Yokohama Advan Sport
215/45/18 and 235/40/18 (kompey)

Michelin Primacy HPZP
225 45 17 and 225 45 17 (Juancarslim)

Falken 452
235/35/19 and 265/30/19 (aponting389)

Dunlop SportMaxx
235/40/19 both front and rear (atmosphere)

Toyo T1R
225 45 17 both front and rear (oreo)

Michelin Pilot Preceda (PP2)
205/50/17 and 225/45/17 (08ABC)

Pirelli Dragon
225/40/18(88 ) front on 208M 7.5-inch (serpent1)
255/35/18(94) rear on 208M 8.0-inch (serpent1)

10. Where can I find more info about tyres?

http://www.carbibles.com/tyre_bible.html

I'm happy to add any other questions which the forum is able to work out so hopefully we can make this a fairly comprehensive document that will be useful to all. Please post specific edits as a reply to this topic and I will amend the above based on what is accepted.

As always on BabyBMW.net, all care was taken when compiling this information but people should satisfy themselves whether this is indeed appropriate for them before acting on the same.

Thanks to all who contributed to this info and helped me compile it. Any errors/omissions please let me know.

cheers
130girl :)
Last edited by 130girl on Thu May 31, 2007 3:14 am, edited 4 times in total.
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Pilsbury
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Postby Pilsbury » Mon Apr 30, 2007 11:17 pm

Forgot mine too - http://www.babybmw.net/viewtopic.php?t=3866 :lol:

As an aside, I noticed that the low pressure warning wasn't as good with non RFT - on non-RFT's the warning only went off when the pressure was REALLY low, like under 6PSI. RFTs report it at over 20PSI.
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Thanks 130Girl :)

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minfred
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Postby minfred » Tue May 01, 2007 12:37 am

Pilsbury,

My experience regarding non-RFT tyre pressure indication is different from yours. On my wheels, pressure indicator annunciated when the pressure in one wheel had dropped by what I would guess was around 6-8 psi (when I checked with a tyre gauge after I got home, 60km later, the tyre pressure was down by 10psi from the rest).

Minfred

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Postby Tauben » Tue Jun 19, 2007 11:35 pm

I'd like to switch to Michelin PS2 ZP tyres. There doesnt seem to be a 205 45 18 fitment for the 130i. Is there any problem in using a 225 40 18 same as the rears?

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tire size

Postby Jerry118d » Fri Jun 29, 2007 8:37 am

Hi everybody, I have question, I just change front Euforias on 142´ wheels to CSC2 non runflats. I am wondering to put on rear 235/40 R 17 instead of 225/45 R 17. Do I fit this size on 7,5x17 wheel and also on the car??? Thanks a lot Jerry

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Postby Auto » Thu Jul 12, 2007 10:37 pm

Does 19'' 9.5 in the rear fit and what ET is recomended?

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Postby Jerry118d » Fri Jul 13, 2007 6:13 am

Hi I am not sure, Its pretty big for 1 series.... :lol:

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rsmallwo
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Postby rsmallwo » Mon Nov 05, 2007 1:00 pm

I have standard 208M wheels on my 130i M sport.

From what the FAQ tells me the front alloys are 7.5" wide and the rears are 8" wide, correct me if this isn't the case.

Can i still put a RUNFLAT 225/40/R18 tyre on the front alloy wheel that is 7.5" wide rather than the 205/45/R18 that is comes with? Does it fit on ok without trouble, does it look alright.

If anyone has done this then please post pics or links to pics if you can.

Again, this is putting on a Runflat replacement not non runflat.

Thanks

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ITSystems
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Postby ITSystems » Sat Dec 29, 2007 4:29 pm

Not sure about the sizes listed above.

My 120d has the 208M wheels on it.
The Bridgestone Potenza RE050 runflats at the back are 245/35/18 88Y.

The car had only done 400 miles when the dreaded red light came on!
Cost of replacement - £272

I had to get it straight from BMW as it's a special order.
120D M

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Postby cheekiestgrin » Mon Feb 11, 2008 11:47 am

Folks, where would I be able to get the Schnitzer 18 type IV's, size 8 front 8.5 rear with 225 front and 245 rears suitable for my 123D? I am also looking at fitting these with run flats.

Would these work with my OEM M sport package?

I am looking to lower the car another 25-30 mm over what it is as presently - there is still a fair gulf between the wheel and arches.

Is this doable? :?
123D MSport. 265bhp with Ptronic box. No tuners seem to offer any more power (so far ;) most of them, less. Till you do, take up the 'free' offer to reflash your car by spending your own time driving up to your tuner if it is overwritten by your dealer ;)

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Postby cheekiestgrin » Thu Feb 21, 2008 1:41 pm

123D MSport. 265bhp with Ptronic box. No tuners seem to offer any more power (so far ;) most of them, less. Till you do, take up the 'free' offer to reflash your car by spending your own time driving up to your tuner if it is overwritten by your dealer ;)

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andrew186
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Re: Wheels & Tyres FAQ- please read before posting

Postby andrew186 » Sun Apr 13, 2008 4:54 am

someone should add some recommended tyre pressure details to this sticky..

i've been trawling the search and so far ive found that the recommended for 225/40/R18 is 2.2 front and 2.5 rear.. is this correct?

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tminal
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Re: Wheels & Tyres FAQ- please read before posting

Postby tminal » Sun Apr 13, 2008 8:18 am

andrew186 wrote:someone should add some recommended tyre pressure details to this sticky..

i've been trawling the search and so far ive found that the recommended for 225/40/R18 is 2.2 front and 2.5 rear.. is this correct?


If you have standard wheels that came with the car then tyre pressures are detailed on the sticker which can be seen on the 'B' pillar on the drivers side as you open the door.

:idea: Good idea though to get them detailed on here for info!
Mercedes C220 Sport - Tenorite Grey
Gone....
Citroen DS4 115Hdi DStyle - Polar White
Alfa Romeo MiTo 1.6JDTm Distinctive - Etna Black
BMW 118i SE 3 door - Alpine White
BMW 116i SE 5 door - Black

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andrew186
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Re: Wheels & Tyres FAQ- please read before posting

Postby andrew186 » Sun Apr 13, 2008 2:15 pm

no mate im using some other budget tyre brand, i've tried contacting them for the recommended pressures but nothing :(

was just wondering what the general pressure's on other members' 225/40/R18's :)

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tminal
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Re: Wheels & Tyres FAQ- please read before posting

Postby tminal » Sun Apr 13, 2008 2:37 pm

Oh I see, sorry! :oops:
Mercedes C220 Sport - Tenorite Grey
Gone....
Citroen DS4 115Hdi DStyle - Polar White
Alfa Romeo MiTo 1.6JDTm Distinctive - Etna Black
BMW 118i SE 3 door - Alpine White
BMW 116i SE 5 door - Black


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