gt4dude wrote:when my speedo says 50 it reads 52 on those things that tell u to slow down.
That's cause Bridgestone doesn't make my size tyre anymore 215/50R16 can only get 215/55R16 and 225/50R16
Same thing when you go to larger mags and cant find an exact match rolling diameter, you end up going a few mm larger than stock on a 5% lower profile when going up 1 inch in wheel size, same for wider wheels and tread width.
It must be common with the amount of cars with mags larger than the stock wheels that the speedo under reads actual speed.
dude where the hell do you shop for tyres and mags?
I ALWAYS make sure that the rolling diamater is the same or i wont sell it.
If bridgestone dont make that size anymore it dosent mean other tyre brands don't. i wouldnt change the size just cos of that its just not the right thing to do.