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02-09-2014, 11:48 AM | #1 |
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Need advice on Track Wheel and tire setup
Hey Guys,
I have an 08 135i and I'm planning to buy a dedicated tire/wheel setup for the track. Ive heard and read lots of good things about going square rather that staggered. The wheels I'm looking at are 18x9 et42 and 18x9 et30. I was thinking of running RS-3s 245/40R18. I am currently lowered and have the M3 control arms in the front, with 12mm spacers and 15mm spacers in rear. Everything else is stock. Will I experience any rubbing issues? Will I need to roll fenders? Thanks, Alex Last edited by alex_d_22; 02-09-2014 at 04:21 PM.. |
02-09-2014, 01:53 PM | #2 |
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I'm not an expert at all but i think 30mm offset is gonna fit neither front or rear without major fender surgery. Also why do you want to go with 9'' wide if you only put 245's?
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02-09-2014, 02:01 PM | #3 | |
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Quote:
If you're looking at track wheels, there's no other starting point than the Apex Arc 8's. At BMW days in norcal you see over 50% of people running them now on all variants of BMWs. It's an even higher percentage on 1 series are our fitment is unique. |
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02-09-2014, 02:05 PM | #4 |
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You need to run a high offset in the rear for 9" wide wheels to fit (aka ET50-63)
For the front, you'll need alot of camber with a 5mm spacer. I have ordered 17x8.5 ET40 squared and will be running 245 tires. |
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02-09-2014, 06:50 PM | #7 |
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02-09-2014, 07:41 PM | #8 |
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got it.
So in this case 18x8 et35 without spacers would be quite close to what i currently run in terms of fitment (front offset 49-12mm spacer = et37, rear offset 52-15mm spacer= et37). I currently dont have any rubbing at all, so I imagine it would be the same with an 18x8 et35 setup? |
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02-10-2014, 12:11 AM | #9 |
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The RS-3 tires will be quite a lot wider than the stock runflats (assuming that's what you are using now). Its like going up by a tire size or two. Ideally you should look at offsets around ET45 and some camber too. Kgolf has a good idea to get 17x8.5" wheels. Even those may need rolled guards if you fit a more track focussed 245 tire at ET40 offset.
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