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[Am91]

Hello

I'm an extremely new BMW owner and was looking at ordering a set of brand new work wheels - just need to confirm the offsets and sizes I'm after will fit with stock suspension as well as coilovers when i lower it. Im going to roll the guards but want to stay away from pumping/flaring.

2010 123d Coupe currently have BMW 313 wheels

Option 1:
fronts 18x8.5 +39 with 225/40r18
rears 18x9.5 +52 with 255/35r18

Option 2:
fronts 18x8.5 +39 with 225/40r18
rears 18x9.5 +45 with 245/35r18

If anyone is running these sizes it would be amazing if you could share pictures


Thank you in advance

[Am91]

Option 3:

fronts 18x8.5 +39 with 225/40r18
rears 18x9.5 +39 with 245/35r18

[Eyeman]

Fronts should work with most non R tire brands. Could rub a little when the suspension compresses or if you go too low. For the rears, option 1 is best. Option 2 will work depending on tire brand, how much you lower, etc. If it does rub more than you want, you could add more camber. Option 3 would be difficult.

[Solo_M_Tech]

Option 1 will work the best. Little to no chance of rub on the back and plenty of clearance up front.

[Am91]

Thank you

Does anyone have photos with the same sizes ?

[Solo_M_Tech]

Mine is close.
18X8J ET40 with 225/40-18 Federal 595RSR ( 241mm wide, same as a 245/35 Michelin PSS)

18X9J ET45 with 245/35-18 Federal 595RSR (253mm wide, wider than my 255/35-18 MPSS.)

Rear fenders had to be rolled. If you are running a ET52 wheel on the back, no fender mods will be needed.

[Am91]

Originally Posted by ApexResistance

Mine is close.
18X8J ET40 with 225/40-18 Federal 595RSR ( 241mm wide, same as a 245/35 Michelin PSS)

18X9J ET45 with 245/35-18 Federal 595RSR (253mm wide, wider than my 255/35-18 MPSS.)

Rear fenders had to be rolled. If you are running a ET52 wheel on the back, no fender mods will be needed.

So nice ! Have you lowered at all?

[Solo_M_Tech]

Originally Posted by Am91

So nice ! Have you lowered at all?

yes, IM on coilovers. The exact amount Im lowered I don't know. I had the car corner balanced when the coilovers were installed. But it's alot lower than stock and zero rubbing.

[inFamousKicks]

If you're trying to stay conservative, option 1 would be ideal. The 39ET in the front is a little most aggressive than the 313s, but you shouldn't really have a problem.

[tphaeng]

I have a little more aggressive setup and a subtle drop.

8.5 et35 fronts 215/40
9.5 et40 rears 255/35

Eibach springs with stock shocks

No rub

[Am91]

I test fit 18x8.5 +42 front 18x9.5 +45 rear and it sat well with stock suspension. If I went +45 all round would this be ok with stock suspension and be compatible when I lower it ?

[lowside67]

It will depend on your tire and rear alignment.

I am running a 255 RE71R which is a wide 255 on a 9" +45 rear wheel with -2 degrees camber, and it does not rub during street driving, but does rub during extreme autocross use.

"tphaeng" reports no rubbing with 9.5" +40 offset with 255s which does not seem likely to me - his wheel sticks out 11.5mm more than mine. For my setup to rub under autocross and his to not, it would only be possible is if he is running a bunch more rear camber (like -2.5 minimum or has a super narrower 255). The photo above looks like the tire is a bit narrow as it appears to be stretched, but frankly it does not look like it would clear under even moderate cornering.

To your question, a 9.5 +45 will only fit with a 255 if you have over -2 degrees of camber and a narrow tire. Otherwise you will require -2.5 or more camber to clear it under ALL circumstances.

Mark

[tphaeng]

Originally Posted by lowside67

It will depend on your tire and rear alignment.

I am running a 255 RE71R which is a wide 255 on a 9" +45 rear wheel with -2 degrees camber, and it does not rub during street driving, but does rub during extreme autocross use.

"tphaeng" reports no rubbing with 9.5" +40 offset with 255s which does not seem likely to me - his wheel sticks out 11.5mm more than mine. For my setup to rub under autocross and his to not, it would only be possible is if he is running a bunch more rear camber (like -2.5 minimum or has a super narrower 255). The photo above looks like the tire is a bit narrow as it appears to be stretched, but frankly it does not look like it would clear under even moderate cornering.

To your question, a 9.5 +45 will only fit with a 255 if you have over -2 degrees of camber and a narrow tire. Otherwise you will require -2.5 or more camber to clear it under ALL circumstances.

Mark

I don't run any custom camber in the rear. Whatever stock is is what it is. I have a pilot sport all season in the rear (255/35/18) on a 9.5 wheel so there's a little stretch. You don't have to believe me if you don't want to but all I know is that it doesn't rub at all.

[Am91]

Quick update:

Ordered the wheels in +45 all round
Had some custom coilovers made with my ideal ride height set ! So excited