12-21-2016, 05:38 AM | #1 |
Addiction
39
Rep 121
Posts |
Increasing tire size from 245/265 to 255/275: any cons ?
Thinking about putting some winter tyres on stock rims. Would 10mm wider fit? There are more choice.
Thanks. |
12-28-2016, 06:50 PM | #7 |
Major
986
Rep 1,153
Posts |
Why did BMW not make the stock widths 255/275, I wonder?? I also wonder whether I could fit those on the stock wheel with a one-inch drop and 10 mm spacers....
I've got Contis, and I am going to beat those babies up so that by summer I can bullshit myself into thinking I need new tires |
Appreciate
1
///M TOWN31306.50 |
12-28-2016, 07:15 PM | #8 |
First Lieutenant
345
Rep 396
Posts |
Assuming the same profile, an increase in width also brings a corresponding increase in sidewall height.
35 series tyre. 10mm more width = 2x3.5mm = 7mm increase diameter. And to answer the previous question....no it won't cause issues with DSC or LSD function. There will be a minor change in speedo which will more likely then not make it closer to a true reading. With the OEM MPSS tyres, 100kph indicated equals 98kph GPS. That's the theory. In reality, different brands and models of tyre may or may not measure exactly what is printed on the sidewall. YMMV......literally. Last edited by Caduceus; 12-28-2016 at 07:23 PM.. |
Appreciate
7
M3 Adjuster7909.00 tokki203.50 eatingpizzainthef87rules253.00 devo755.00 dead.pixel107.50 terrywang110.50 koston37.00 |
12-28-2016, 07:37 PM | #9 | |
Brigadier General
1581
Rep 3,888
Posts |
Quote:
|
|
Appreciate
0
|
12-29-2016, 06:45 AM | #10 |
Second Lieutenant
144
Rep 288
Posts
Drives: 2016 328i xDrive M Sport
Join Date: Apr 2015
Location: Magical Land of Peaches, USA
|
Yes and no... The diameter of the tire changes even when the only parameter changed is the width. So yes, 255, 275, refers to the width of the tire, that is understood. However increasing the width of the tire from 245 to 255 or 265 to 275 does increase the overall diameter of the tire. I took a snapshot of the differences between Michelin Pilot Super Sports. The top one is stock tire size and the bottom is one size. As you can see yes the tires are most definitely wider as expected, however overall diameter has also increased along with a change in revs per mile which will throw off your speedometer, odometer, and possibly ESP depending on what parameters the program monitors. If BMW has a way to manually change the revs per mile in the M2's computer, that will ensure the car is operating as it should with the modified tire size. Obviously, the difference is small, I would hope the BMW programming would be forgiving with such a small difference in diameter and smart enough to compensate appropriately.
|
Appreciate
4
|
12-29-2016, 11:56 AM | #11 |
Private First Class
88
Rep 165
Posts |
And the sizes 255/275/35/19 are compatible with the Coilovers???
Any experience?? I'm thinking to put this sizes on a BBS CI-R et 25 and 35 with a Kw V3... |
Appreciate
0
|
12-29-2016, 06:28 PM | #12 |
Captain
638
Rep 650
Posts |
You will need to test fit anything other than stock sizes. I am putting MP coilovers on my M2 next week, lowering the car, changing the rake and then corner balance.....then check clearances again to see what will fit. Remember that all 255/275 are not created equal....tires can vary a lot between different manufacturers. Also, front camber will effect fit.
|
Appreciate
0
|
12-30-2016, 07:19 PM | #13 |
Second Lieutenant
292
Rep 254
Posts |
I dug around the forums like crazy a few months ago to answer this question. There was actually a guy that went 265's in the front and 285's in the rear and had no issues. That is the route I will be going, no spacers.
__________________
2017 M2 - AW DCT - BM3 93 oct, Pure Stage 2, FBO, happy
2013 BRZ - was a GREAT car... just not fast enough 2008 VW GTI - first experience with boost 97 Integra GSR - crashed it Last edited by Norcalmav23; 01-01-2017 at 07:21 PM.. |
Appreciate
0
|
12-30-2016, 08:33 PM | #14 |
Lieutenant
475
Rep 549
Posts
Drives: The Bus
Join Date: Oct 2016
Location: Berkshire
iTrader: (0)
Garage List 2017 Ford Focus RS [0.00]
1971 Mk3 Austin Min ... [0.00] 2013 MINI R56 GP [0.00] 2013 MINI R55 Clubvan [0.00] |
|
Appreciate
1
M3 Adjuster7909.00 |
12-31-2016, 01:04 PM | #16 | |
Captain
623
Rep 796
Posts |
Quote:
I've had 265,275's mounted on the front. The 275's won't rub with a 30 sidewall. They tend to rub on the plastic liners first. So a 275/30 would actually be a better fit then than a 265/35. I'll be going 265/35 up front because I want that extra sidewall. I don't mind a little liner rub. Out back a 285 makes the most sense. I'm thinking there's no reason why a 295 wouldn't fit or even a 305 with the right offset. I had 315/30 Hoosier r7 slicks mounted and they are too pudgy with a 10" wheel. Anything bigger than a 295 you'll have to be exact with your measurements and offsets. More suited to a high offset 10.5 or 11 |
|
Appreciate
2
M3 Adjuster7909.00 mountaineer107.50 |
01-01-2017, 12:48 PM | #17 | |
Lieutenant
530
Rep 542
Posts |
Quote:
-c
__________________
2016 BMW M2/LBB/6MT/Exec Pkg
2009 Acura MDX-stock 2008 Acura RDX-stock 2005 Honda S2000-mostly stock 1994 Nissan 300ZX Twin Turbo-barely stock |
|
Appreciate
4
|
01-01-2017, 06:06 PM | #18 |
Captain
623
Rep 796
Posts |
Correct I couldn't find decent sizes, couldn't pass up the 265's
|
01-02-2017, 12:11 AM | #19 |
Colonel
1427
Rep 2,562
Posts
Drives: Rapidly from A to B
Join Date: Jun 2005
Location: Chicago 'burbs or TN Smokies
|
What brand of tires and wheel offset? Suspension mods? How much rub if any? Sorry for all the questions but am very interested in doing this. I have about -3 camber and would like to put on ET27 or 25 offsets with 265/35s.
|
Appreciate
0
|
01-02-2017, 04:49 PM | #20 | |
Captain
623
Rep 796
Posts |
Quote:
When I have my wheels built it'll be close to those specs. 19x10 square et 32-36, haven't decided yet but I'll be running them with the spacers since they won't have centercaps, the turner hub-extenders hide the hub rust when running Open lug racing wheels. So final specs with spacers will be right around 19x10 et 22-25 front and et 28 rear. I still have a little room out back with this setup and camber plates up front would give me 5mm or so of extra wiggle room. |
|
Appreciate
1
Pyrat 21427.00 |
01-03-2017, 12:12 AM | #21 | |
Major General
7544
Rep 7,479
Posts |
Quote:
http://www.1010tires.com/Tools/Tire-Size-Calculator The overall diameter increases with every step up in width. For 245->255 the difference is not really going to disturb anything though. Once you get 20 or more away you should see if dropping the aspect ratio brings you closer to the stock diameter. |
|
Appreciate
0
|
01-07-2017, 11:05 AM | #22 | |
Colonel
1427
Rep 2,562
Posts
Drives: Rapidly from A to B
Join Date: Jun 2005
Location: Chicago 'burbs or TN Smokies
|
Quote:
Wanting 265/35 instead of 275/30 because I'm looking for some extra rubber between the ground and the wheel. My concern has been rubbing with the fender liner in front near the inlet duct. Clearance is very tight even with the stock wheels when they are turned and I want to make sure that the larger diameter doesn't rub there. I'm not concerned about inner rub with the strut or outer rub with the fender (because of my camber). I too will be going with the Turner extenders. My wheel on order are 35 offset and was looking at either the 7.5 to 10mm extenders giving me a 27.5 or 25 offset. My rear offset will be 35 with a 265 or 275/35-19 tire. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|