i am getting motegi mr7s 17in... from http://www.1010tires.com and i donno what size tires to choose... help please... i want to get yokohama A520's there are like 8 diffrent 17in ones... donno what the rest of the numbers and letters mean... thanks...
~josh

 

i would suggest for you either 205/40 or 205/45 or 215/40.
those tires have less rubber than say a 285/40 that is a huge tire you dont need anything like that or even close to it.

i'm running falken ziex 512 tires 215/45/17 on my enkei cdr9 wheels, i need the extra rubber cuz the roads around here are terrible.

ohh yeah and nice choice of wheels i thought about getting those too but i ended up goin with the cdr9's.

Brian

 

Just look at yur tire there are numbers on them that tell either tire pressure or size

 

it should say on yoru side wall

 

this should answer all of your questions:
http://www.autoclubgroup.com/michiga...read_tires.asp

 

lets say its 215/40/zr17
the 215 is the width the 40 is the sidewall height (percentage of width i think) the zr would be a speed rating like z, zr, v... and the 17 is the rim size

ViZ