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[Dave]

I know the after market thread is great but i found this over at www.babybmw.com and our bolt size should be identical for 135i and 128i according to my dealer in nj.

hope this becomes a sticky!

i 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)

[larryn]

Great info! The insurance info appears to be Euro specific, and TUV is mentioned, which doesn't apply in the States. Also, the stock tires/wheels on the 135i are bigger than almost all of the ones mentioned in your post:

Front: 18x7.5 with 215/40/18
Rear: 18x8.5 with 245/35/18

Based on the info in your post, I am wondering if there is more room in the wheel wells on the coupe than either of the hatches.

[TunedM2C]

So 19" wheels won't be a problem...good.

[acrain]

I hope they put 245's AT LEAST in the back. Anyone know what the bigges tires the wheel wells will be able to fit? doubt it, but would love to know.

[Dave]

I am sure many of you know like from tire rack and he assured me on the 128 I can run 245 in back and 225 in front on staggered 18's Volk re30 . I was rdy to pull the trigger but he said to wait because tire rack is either getting a test mile or sending a guy to Europe in January

[semaj]

I wonder what the widest size 18" tire I can fit in the front and rear (non staggered)

[Dave]

Non staggered you could run 8x18 with 235 but the front may be a lul full but it def won't rub

[SpeedFrq]

Great thread thank-you! I have been scanning this site for about an hour trying to confirm the 1er will have the same standard BMW bolt pattern...

[SpeedFrq]

oh, and I'm very happy to hear that 19's will fit