[j_block]

I bought trmotorsport c2 wheels. 18x8.5 I think. What's the widest tire I can mount on a 8.5 wheel?

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[2003 325i]

Your ride being the same as mine... depending on offset 255/35 or 265/35... however width is pointless at that size on a car like ours other than visual appeal. I'd run 235/40s just for ride quality and price of tires.

BTW my rears came with 255/35s. When the rubber is done on them I am putting on 235/40s

 

[ICONIKE46]

Don't go more than 255. 255 squared can fit but depending on ET you may need to get fenders rolled. Another member on the forum has apex arc-8s 18x8.5 with 255s squared and has no fender modifications to my knowledge so it is possible.

 

[j_block]

Thanks for the responses. I got 245 35 18. The ET is 48. I am lowered on tein s springs. What size spacers do you guys recommend

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[2003 325i]

Test fit first and figure out for yourself. Based on camber and slight variations every car is different. I would say 10 or 12 mm in the back likely, 8 or 10 mm in the front.

Test fit first.

 

[Evap]

You can't really test fit with spacers you don't have.

J_block, get a ruler and measure from your tire's sidewall to your fender and see how much clearance you have. Then get spacers a 5mm or so smaller than how much clearance there is. Otherwise you may get some herrafrush rubbing.

 

[2003 325i]

I meant put the wheels on and then measure. Can stack washers behind wheels as well (don't drive obv) and meansure how thick the stacks are to get an idea. Problem is you won't know behaviour under cornering/compression.