Quote:
Originally Posted by zubydafa
Awesome post david. I'm interested in running a similar setup as below. My understanding is that this example is running 18x9.5 et35 and 18.10 et25 with 275/35 square tires. I have the same spec rims and am shopping for some competition tires for track use.
Problem is, I have kw v3 which have the progressive spring. I'm dialed in at around -3.5 degrees front camber. I don't rub at all with 19x8.5 et32 with 245/35 tire. Do you know how my car would respond to a 275/35 front on 18x9.5 et35? I am not opposed to using spacers.
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275/35/18 is a pretty wide tire for an 18x9.5" wheel in the front of a Z4. We have experienced clearance issues with the KW suspension with the 18x9.5" ET35 and a 255/35/18 tire, which is why we recommend a 5mm spacer for that setup. Since you have the V-shaped progressive springs with your V3's and you plan on running a 275 tire, you may need a 12mm spacer or larger to clear the spring perch. This may require additional camber as well to clear the fender since you will be pushing the wheels further out past the fender than you would with a 5mm spacer.
This fitment will also depend on the model and brand of the tire you plan on running as some tires run wider than others. You may need to play with spacer sizes and camber settings to find the ideal setup for you. Please let us know if you have any other fitment questions and we'd be happy to assist you.