[ENVY_XB_#299]

will putting 18s throw off the speedo if so how much ... if so i gotta keep a light foot

 

[grizzly_choppers]

As long as you use the correct tire you'll be fine.

Without knowing your width I can't tell you the right size though.

Assuming you're running a 7.5" width though you will need a 215/35R18 to have the speedometer work correctly.

-Alex

 

[Big_Kokujin]

Well you learn something new everyday...i didn't know the width had anything to do with the speedo, i always thought it was the rim and sidewall size.

 

[surfcitylocal]

Me too.

 

[Ghost_1]

so is there a formula to figuring out the tiresize needed to keep the speedo correct, cause I was wondering the same thing but I hav 16x7. Or you could just tel me what size I needed. . .ha ha ha

 

[Big_Kokujin]

I'll look for it, but theres a website that tells you what sizes of rim/tire combos you can to keep it around the stock diameter/circumfrence/radius, whichever...


New version

Old version

 

[Ghost_1]

Thanks! I just found out I've been driving 2 mph slower then I should have. That could explain why I am getting honked at now. . j/k

 

[Big_Kokujin]

Yea, in my 626, i was going 4 faster than what was displayed in the speedo