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      12-16-2014, 08:44 AM   #1
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Question Going +1 on tires. Cons?

OEM = Bridgestone Potenza S-001 RFT

FF 225/40/19 Diameter = 26.1", Revs / Mi. 798



RR 255/35/19 Diameter = 26", Revs / Mi. 801


________________________________

+1 = Michelin Pilot Super Sport NON-RFT

FF 235/40/19 Diameter = 26.4", Revs / Mi. 787



RR 265/35/19 Diameter = 26.3", Revs / Mi. 790



Is there something else I should be concerned with?

Thanks in advance to all the wheel, tire and TPMS experts.

Last edited by G30 B58; 12-16-2014 at 01:43 PM..
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      12-16-2014, 10:24 AM   #2
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Quote:
Originally Posted by F32 N55 View Post
...Is there something else I should be concerned with?
Going to "correct" your speedometer to something closer to actual (they usually read 2% fast).

You probably won't be able to put chains on the rear - will be too close to spring/shocks or fenders. But pretty much all oversizing does that anyway.
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      12-16-2014, 10:43 AM   #3
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Those are both "pros" in my book .
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      12-16-2014, 01:48 PM   #4
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As long as the diameter variance is under 3%, your good to go!
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      12-16-2014, 02:03 PM   #5
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Quote:
Originally Posted by F32 N55 View Post
Those are both "pros" in my book .
If you're in front of me with chains on, going 15-20 mph to keep the chains from beating your fenders to death, I'm going to pit you off the road so I can go by.
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      12-16-2014, 05:22 PM   #6
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Originally Posted by floydarogers View Post
If you're in front of me with chains on, going 15-20 mph to keep the chains from beating your fenders to death, I'm going to pit you off the road so I can go by.
That's fair.
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      12-17-2014, 06:36 AM   #7
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Found this tool over in the M3/4 forum.

http://www.dakota-truck.net/TIRECALC/tirecalc.html
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      12-17-2014, 09:44 AM   #8
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Quote:
Originally Posted by F32 N55 View Post
Found this tool over in the M3/4 forum.

http://www.dakota-truck.net/TIRECALC/tirecalc.html
Good stuff
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      12-17-2014, 01:04 PM   #9
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I'm running the describe tire size with 35 offset in the front and 37 in the back with no issues. I used the following link when doing research.

http://www.willtheyfit.com/index.php...et2=37#content
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      12-17-2014, 03:15 PM   #10
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Quote:
Originally Posted by floydarogers View Post
If you're in front of me with chains on, going 15-20 mph to keep the chains from beating your fenders to death, I'm going to pit you off the road so I can go by.
Since you're in WA and he's in PA, hopefully you won't come across each other in the Winter. '
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      01-07-2015, 08:30 PM   #11
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can you post a pic of how they look and describe the difference in the feel? did you drop it or use spacers?



Quote:
Originally Posted by egray1 View Post
I'm running the describe tire size with 35 offset in the front and 37 in the back with no issues. I used the following link when doing research.

http://www.willtheyfit.com/index.php...et2=37#content
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      01-07-2015, 08:31 PM   #12
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can you post a pic of how they look and describe the difference in the feel? did you drop it or use spacers?
you asking me or egray1?
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      01-07-2015, 08:34 PM   #13
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Quote:
Originally Posted by F32 N55 View Post
you asking me or egray1?
egray 1... but if you did it feel free to share as well
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      01-10-2015, 09:06 PM   #14
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Originally Posted by PRODIGAL KING View Post
egray 1... but if you did it feel free to share as well
Here you go.
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      10-09-2015, 10:06 AM   #15
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Sorry to revive an old thread...I am finally making the move to non run flats and the idea of going +1 intrigues me. So please excuse the ignorance but what is the benefit of going +1? From looking at my stock tires it looks like they are slightly stretched so will +1 make the tire sidewalls more flush with the tire or will it bulge?
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      10-09-2015, 10:11 AM   #16
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Quote:
Originally Posted by tboooe View Post
Sorry to revive an old thread...I am finally making the move to non run flats and the idea of going +1 intrigues me. So please excuse the ignorance but what is the benefit of going +1? From looking at my stock tires it looks like they are slightly stretched so will +1 make the tire sidewalls more flush with the tire or will it bulge?
It bulges slightly. Gives it more of a "racecar" look if you will. Puts more tread on the ground although just 10mm or so. It also adds a small cushion against curb rash.

As noted above, the speedometer is closer to correct and the little bit of added height really helps fill up the wheel wells nicely.

I'm old(er) and old school, I hate the stretched tire look even the slight stretch from the factory. I love the "meaty flush" look that the wider tires gives. When it's time for replacement, I'll do it again.
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      10-09-2015, 10:17 AM   #17
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Quote:
Originally Posted by F32 N55 View Post
It bulges slightly. Gives it more of a "racecar" look if you will. Puts more tread on the ground although just 10mm or so. It also adds a small cushion against curb rash.

As noted above, the speedometer is closer to correct and the little bit of added height really helps fill up the wheel wells nicely.

I'm old(er) and old school, I hate the stretched tire look even the slight stretch from the factory. I love the "meaty flush" look that the wider tires gives. When it's time for replacement, I'll do it again.
Thank you so much for the reply. Would you happen to have a pic of how the tire looks in relation to the wheel?
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      10-09-2015, 10:28 AM   #18
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Most noticeable on the bottom. Just the slightest bulge past the lip of the wheel. Had this on my phone and had to zoom in a bit but you get the idea.

Note, I believe there is a 12 mm spacer on that wheel.

tboooe
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      10-09-2015, 12:25 PM   #19
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I actually went +2 with 245-40-19 and 275-35-19 and am really liking my set up so far
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      10-09-2015, 01:34 PM   #20
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chaudhrysn Are your tires mpss? Difficult to tell with all black.
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      10-09-2015, 01:38 PM   #21
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Quote:
Originally Posted by NorthNJ
chaudhrysn Are your tires mpss? Difficult to tell with all black.
Naah. Much cheaper lol. I went with Yokohama's A/S
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      10-09-2015, 03:08 PM   #22
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Quote:
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Naah. Much cheaper lol. I went with Yokohama's A/S
Are your aftermarket wheels the same width as OEM?
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