Originally posted by fahad:
i understand that 15" diameter means 15" rims. I just wanted to know if some cars can't hold like and 18" diameter or something, that site helped alot though. Can i get my gauges re calibreated or something for cheap if i do get bigger tires. I need to gather some money up though.
There are various calculators on the web that will tell you the speedometer inaccuracy from whatever size you want. You should try and do 'plus one' sizing.
Plus one from a 205/60R15 is a 205/55R16. The aspect ratio (number after the /) is decreased by 5, the tire size (last number) is increased by one.
Plus One: 205/55R16
Plus Two: 205/50R17
Plus Three 205/45R18
There are some people with 18" wheels, but it is a very close fit and some have even had to modify the wheel wells. I'd say go with 17". Most are running 225/50R17 or 215/45R17 (common tire sizes). Be warned, tires in 17"+ sizes are pricey and not good in snow/rain.
