2006-06-05 19:12:04 · 4 answers · asked by juventus_1205 1 in Cars & Transportation ➔ Maintenance & Repairs
You have to drop the aspect ratio of your tire if you go to larger rims. If your car had 17" wheels with 225/45/17 tires, and you go to 18" wheels, your tires will have to be 225/40/18 to keep the rolling diameter the same. If you go too large, increasing the rolling diameter will cause the speedometer to read low. I would suspect if you increase the rolling diameter, you are legally obliged to recalibrate your speedometer (since your odometer reading - the miles on the car - will be low).
Check out tire prices along with rims (tirerack.com is a good place), just to be sure you want to do this. Also keep in mind that larger rims (18" and over) will DECREASE your car's performance and handling, and may require a BBK (which run ~$3000 and up) for safe braking.
2006-06-06 06:04:05 · answer #1 · answered by M3Owner 3 · 0⤊ 0⤋
Rims won't really matter if the outside diameter of the tire doesn't change. If you put on larger tires then it will change.
2006-06-06 02:19:30 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the rims wont if you have the same hight of tire but if you go with abigger rim and bigger it will change.
2006-06-06 05:48:30 · answer #3 · answered by mlwill9455 1 · 0⤊ 0⤋
Yes it will read a lower speed than you are actually travelling.
2006-06-06 02:17:31 · answer #4 · answered by rsdudm 5 · 0⤊ 0⤋