275 40 20

avidmotion

New member
Has anyone run the 275 40 20 on a stock suspension (no H&R springs), and not had rubbing or ABS problems....2013 +PP SHO
 
I don't see why you would have ABS issues unless you only changed two tires, as long as all 4 match ABS should be fine, as will the AWD system. If you differ front and rear by 3% or more you may have AWD issues.

Since the 275/40/20 will fit on a lowered SHO, I see no reason to expect issue on a stock height car.
 
avidmotion said:
Has anyone run the 275 40 20 on a stock suspension (no H&R springs), and not had rubbing or ABS problems....2013 +PP SHO
Much will depend on the wheel choice.  275 will not go on stock wheels from everything I have read.  What wheel are you looking to go to?
 
I was looking to stay on stock rim. I think i will do 255 45 20 with the new GMAX RS summer tire, word is they are awesome. 135 shipped for the 245, 360 AA A
 
avidmotion said:
I was looking to stay on stock rim. I think i will do 255 45 20 with the new GMAX RS summer tire, word is they are awesome. 135 shipped for the 245, 360 AA A
according to their spec sheet online the RS isn’t made in a 255/45/20. have to stick with stock size or push your luck trying to mount a 275/40/20 on the stock rim


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irondoor19 said:
Colorado-SHOBro said:
jman said:
I got 275 40 20 with H&R springs, no rubbing. Car looks great with these.
How wide are your wheels jman?

not trying to hijack but:

2011 PP with H&R's, Motegi MR120 Black 20 X 9 Wheels (W 275/40ZR-20 Pirelli P Zero's)
^thanks that's what i needed to know. Been tempted to try 275's on my 8.5" wheels but don't really think that'd be a great setup.
 
jman said:
Colorado-SHOBro said:
jman said:
I got 275 40 20 with H&R springs, no rubbing. Car looks great with these.
How wide are your wheels jman?

I'm not 100% sure, I believe 10". Will try to get a rough measurement tonight.

Aren't 10" a bit wide for a 275?...BTW I love a 275/40 on the SHO...Grip monster....SHO bro I would put a 275 on a 8.5...Maybe a bit of a bulge but not bad...I have a 305 on my 9.5" mustang wheel...It's similar in terms of how much wider the tire is than the wheel.
 
I wouldn't hesitate to much to run a 275 on an 8.5 inch wheel.  I love me some tire bulge.  There not going to separate a bead any easier than a 245 would.  Look how far the VW and Honda community stretch their sidewall for the sake of tuck AND poke, and their failure rate isn't as high as one would expect.  Going the other way would be safer IMHO.
 
irondoor19 said:
Colorado-SHOBro said:
jman said:
I got 275 40 20 with H&R springs, no rubbing. Car looks great with these.
How wide are your wheels jman?

not trying to hijack but:

2011 PP with H&R's, Motegi MR120 Black 20 X 9 Wheels (W 275/40ZR-20 Pirelli P Zero's)
Those 275 look to fit on the 9" wheels pretty well.  Any idea what the offset is on those wheels?
 
jman said:
Colorado-SHOBro said:
jman said:
I got 275 40 20 with H&R springs, no rubbing. Car looks great with these.
How wide are your wheels jman?

I'm not 100% sure, I believe 10". Will try to get a rough measurement tonight.
I just measured the rim from lip to lip and got about 10.5"... so definitely 10".
 
AJP turbo said:
jman said:
Colorado-SHOBro said:
jman said:
I got 275 40 20 with H&R springs, no rubbing. Car looks great with these.
How wide are your wheels jman?

I'm not 100% sure, I believe 10". Will try to get a rough measurement tonight.

Aren't 10" a bit wide for a 275?...BTW I love a 275/40 on the SHO...Grip monster....SHO bro I would put a 275 on a 8.5...Maybe a bit of a bulge but not bad...I have a 305 on my 9.5" mustang wheel...It's similar in terms of how much wider the tire is than the wheel.
TBH i’m not sure i’d gain a whole lot of real word contact surface by going that much wider on an 8.5” rim. the bulge would curl the shoulder of the tire in and reduce the effective width of the tire. or am i wrong?
if i had more of a problem with grip i’d look into it further . . but you know my struggle at this altitude, it’s hard to build enough boost off the line to break traction a whole lot. and even then i think torque source 15 might shut me down.


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Yea I wanted the 255, only looked at stock size at the price. Going stock size with the RS, least expensive of the bunch....
 
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