bassamrifai
09-30-2007, 05:32 PM
Ok i know i am gonna sound like a noob here but i have a question about tire fitment. As we all know the stock tire size is 225/45/18 but i wanted to know if I would be fine with a 225/40/18 size since that size has a lot more selection then our stock tire size. Just in case your wondering this is for the stock 18" wheels. Also if that size wont work does anyone have any suggestion on what other sizes might work? I searched about this but i just found a bunch about aftermarket wheels. Thanks.
lurch519
09-30-2007, 05:34 PM
if you go with the 225/40, your speedometer will be off.
you can go with a 245/40 or a 255/40
bassamrifai
10-02-2007, 01:38 AM
but will it fit fine on the wheels? thats my major concern... thanks by the way
NgoRX8
10-02-2007, 01:50 AM
yes it will fit fine, but your speedometer will read too fast.
andyp04rx8
10-02-2007, 08:21 AM
I have that size mounted now. They fit fine and the 3% the speedometer is off
is not even noticeable to me. We're only talking about 2-3 mph difference.
Andy
Olorin2
10-02-2007, 12:30 PM
if you go with the 225/40, your speedometer will be off.
you can go with a 245/40 or a 255/40
So, just out of curiousity, what's the better fit for a 19" wheel: 255/40 or 255/35?
NgoRX8
10-02-2007, 12:47 PM
255/35. diameter will be as close to stock as possible on the 19 inch wheels.
Silver_Surfer
10-02-2007, 12:47 PM
I plan to do that! A lighter tire with alittle lower gear ratio=:)
Olorin2
10-02-2007, 12:48 PM
255/35. diameter will be as close to stock as possible on the 19 inch wheels.
Well that makes sense, thanks. :)
lurch519
10-02-2007, 02:44 PM
sig pic is me 255/35-19 all the way round
mac11
10-02-2007, 02:51 PM
I have that size mounted now. They fit fine and the 3% the speedometer is off
is not even noticeable to me. We're only talking about 2-3 mph difference.
Andy
don't forget you will be slowly adding miles to the odometer that you did not actually drive.
swoope
10-03-2007, 01:33 AM
http://www.1010tires.com/tech.asp
do the math..
beers :beer:
andyp04rx8
10-03-2007, 10:20 AM
Yes it adds more miles in. but the tires were much cheaper cost.
The added bonus is equal to a little bit over half the gear change
from stock to 3.77 ratio, stock being 3.55. without actually having to
crack open the diff.
Top it all off, I seem to be getting better gas mileage by 1-2 mpg.
Andy
mac11
10-03-2007, 10:55 AM
Yes it adds more miles in. but the tires were much cheaper cost.
The added bonus is equal to a little bit over half the gear change
from stock to 3.77 ratio, stock being 3.55. without actually having to
crack open the diff.
Top it all off, I seem to be getting better gas mileage by 1-2 mpg.
Andy
better gas mileage? or you put more miles on the odometer? remember you are not traveling as many miles as it says anymore.