Hmm... being an aussie I misread the 14" and 15" as in diameter of inside of wheel.
You have 15" WIDE tyres? thats a 350Rx/yy size tyre? Sheesh that is wide. Here I was thinking my 235's on a 320i looked big enough! hehe
If you want to run tyres that wide you really only have one option and it wont be cheap.
For starters you may need to change the wheel offset with spacers to make sure you clear everything on the inside of the tyre. IE: body work, suspension parts etc.
The second and costly aspect is to flare the guards out to clear the outside of the tyre. I read in a recent Total BMW that it can be done without cracking paint and get an extra inch or so in clearance.
If you try and limit the up and down movement of the suspension, you'll degrade the handling of the car. Doing so will also make every grain of sand on the road feel like a bolder (know from experience with a MkII escort).
The main thing is to make sure you have plenty of clearance on the arch. I have 235R17's on my car and i've managed to rip the front guard lip out big time and gauge out a huge chunk of rubber around 1/3 of the tread... and that was just driving into a carpark with a slight lip from the bitumen!
If you want to go all the way, I also saw a feature car where they put in a huge camber kit on the rear so the top of the wheel was over an inch further in than the rubber at the bottom.
Good luck with it.. sounds like you're having fun making a unique ride!
Last edited by basrite; 02-24-2009 at 10:36 AM.