Originally posted by AirKnight:
225's is the max you can put on without rubbing. But see, the optimal rim width is when the rim width is 90% of the tire width. When I put my 225/50/15 on the stock wheels, the tires are about 75-80% of the wheel rim width and that's the minimum... This season I can't afford 17's, so I'll be using the 15's for racing, and 16's for street. Thought next year, I'll be using the 16's for AutoX, 15's for dragstrip, and 17's for the street.
With race tires I don't believe you have to follow that rule. I'm going to use some spacers to try and squeeze the 245's on the car. A little rubbing will probably occur, but it will be for a very short duration.
2004 Focus PZEV 2.3L - KW sport suspension, SP camber plates, Eibach front swaybar, FS intake, FS Stealth exhaust, 3.82 Final, Torsen ATB, Prothane MM insert, E1 CSVT wheels
1/4 mile - 15.201@89.4mph
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