275 up front...
- Thread starter SHODYOU
- Start date
panther427
New member
Well I can get a good deal on a set of summer Pirelli Tires. That's why I asked. Thanks
I have been following this topic for a while as I too am intrested in purchasing some wheels and tires with the idea of having 275s all around. Help me understand this concept correctly now,... the higher the offset, the closer the wheel is to the outside of the rim which means on a hard turn you could rub the inner fenderwall ???? 
... i was under the impression with a lower offset the wheel would align closer to the center would should put the wheel farther then the fenderwall.
Any thoughts on this?
... i was under the impression with a lower offset the wheel would align closer to the center would should put the wheel farther then the fenderwall.Any thoughts on this?
AndyMan04 said:I have been following this topic for a while as I too am intrested in purchasing some wheels and tires with the idea of having 275s all around. Help me understand this concept correctly now,... the higher the offset, the closer the wheel is to the outside of the rim which means on a hard turn you could rub the inner fenderwall ????
Any thoughts on this?
Higher offset means closer to the centerline of the car, lower is opposite. Wheels and tires move together with this.
Lower offset will flush up with fenders, and more will cause poke. Factory is +39 on an 8" wide rim (for Flex, should be same for SHO.)
Don't forget to factor the wheel's width. an extra inch means 1/2" goes to the inside, 1/2" to the outside.
AndyMan04 said:the Nurburgring wheels are +40 offset I believe. So with factory springs I should be able to run 275/40/20 on all four sides.
8.5 inch wide is limit apparently for a 275 wide tire. Is that okay to run the tire that wide on a 8.5 wide rim?
So I'm not 100% sold that you can do this. The offset is very high, and MAY cause a 275mm tire to contact the strut. However... I know of only one way to find out, and that is to test-fit.
An 8.5" wheel on a 275mm tire can be done. I don't like it but it is not "dangerous" or any sort of bad, other than a non-square (tire relative to wheel) setup will have less responsiveness in the steering than a more square setup. Pretty much always.
Exactly. You can also very carefully measure and hope you get it right. But keep in mind, a wheel is measured from its inner rim bead., so an 8.5" wheel is actually 1/2" wider on each side (so 9.5" total), give or take a bit depending on the thickness of the bead.
Be mindful that a tire's actual width can vary from the nominal 275mm, but the actual published measurements are on their spec listings on each tire brand. The width of the wheel mounted affects total tire width as well.
Be mindful that a tire's actual width can vary from the nominal 275mm, but the actual published measurements are on their spec listings on each tire brand. The width of the wheel mounted affects total tire width as well.
The 275x40x20 +38off-set work great on 20x8.5 rim. Autocross or drag racing!!
the 275 are better match to the stock 245's THE SAME SIZE IN EVERY WAY BUT 1.2in WIDER!!!
http://www.discounttiredirect.com/direct/infoTireMath.do
265X35X20 VS 245X40X20 (Your speedo is off by 4mph) only 3/4 in wider.
http://www.discounttiredirect.com/direct/infoTireMath.do
255x45x20 vs 245x40x20 speedo off by +1mph but only 0.4in wider
http://www.discounttiredirect.com/direct/infoTireMath.do.
YOU WILL HAVE TO PUT THE #'s in you self to get comparison .
the 275 are better match to the stock 245's THE SAME SIZE IN EVERY WAY BUT 1.2in WIDER!!!
http://www.discounttiredirect.com/direct/infoTireMath.do
265X35X20 VS 245X40X20 (Your speedo is off by 4mph) only 3/4 in wider.
http://www.discounttiredirect.com/direct/infoTireMath.do
255x45x20 vs 245x40x20 speedo off by +1mph but only 0.4in wider
http://www.discounttiredirect.com/direct/infoTireMath.do.
YOU WILL HAVE TO PUT THE #'s in you self to get comparison .
Here is a pic of my 255/45/19 factory wheel and tire. Factory offset is 38 right? Barely any room it seems..
A 275 wide tire would be a half inch bigger on each side which should clear it okay. If I can find a wheel where the offset is 35 that would be fine I'm sure.
Sent from my SPH-L720 using Tapatalk
A 275 wide tire would be a half inch bigger on each side which should clear it okay. If I can find a wheel where the offset is 35 that would be fine I'm sure.
Sent from my SPH-L720 using Tapatalk
Bringing this old thread to life, any updates on this? Whose ruining 275 upfront, what size rim and offset? I was researching a lot on this, but I don't have any live data, but it seems that 20x9 with a32mm offset would clear inside area by strut, but would 275 clear the outer area of the fender lip?
from what I've seen, total tire diameter plays into effect here. For example, my factory tires are 28.1 inches in height (255/45/19) where a 275/40/20 tire diameter is 28.7 inches. That's a half inch bigger and if you look at my picture in the post above, a half inch is all there is to spare. Some people with some spacers have been able to pull it off. A 275/35/20 tire is 27.6 inches in diameter so that one would seem to work best perhaps...
... now if you could pull off some 305s.... :devil:
... now if you could pull off some 305s.... :devil:
