widest and narrowest summer tires - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Aluma007 · 01-09-2017, 10:45 PM

So i got some rota titans 17x8 +45 and used the stock tires...wow, they look stretched!! Its stock suspension and settings so it really looks funny. Anyone know which stock size tires are actually wider than advertised? Or, which 245/40/17's run more narrow than usual? This is my daily so no race tires, but I'd like to at least get the tire to match the 8inch width without looking stretched.

ryoma · 01-09-2017, 10:55 PM

go 225 wide

finch1750 · 01-09-2017, 11:39 PM

Bridgestone S-04 ran wide from what I compared them to. A 225 would be good on there

jamal · 01-10-2017, 12:07 AM

Go to tirerack and click on the specs tab of a tire, it shows the actual width. Any decent 225/45 is going to fit on there just fine and not be stretched.

icybrzzz · 01-11-2017, 10:34 AM

245/40 Michelin pilot super sports run really narrow. Slight stretch on my 17x9 wheels. People say they fit more like a 225...

Aluma007 · 01-11-2017, 09:41 PM

thanks guys, appreciate the help!

I thought about the 225/45 but the overall diam is more like half an inch more. My car isnt dropped so it might look like a lift than anything else

jamal · 01-12-2017, 12:02 AM

225/45 is completely fine. 0.4" taller overall means 0.2" difference from hub to ground.

why? · 01-12-2017, 09:17 AM

every single tire manufacturer will list all the specs you need, including actual tire width on their website.

Leonardo · 01-12-2017, 03:51 PM

I have ran both 225/45 and 245/40 Michelin tires. The difference in height is subtle. I wouldn't worry about it. Also, IcyBrzzz is correct. The 245/40 MPSS is narrower than some 245's. I went from a 245/40/17 MPSS to a 245/35/18 MPSS, the 18's tread width is half inch wider.

jamal · 01-12-2017, 04:20 PM

Personally I would try to avoid putting a 245 on an 8" rim, even though it has been done. Having the wheel slightly wider gives the tire casing better support.

Seriously, get yourself a good 225/45. The set will be like $100 cheaper than 245s and fit better on the wheels.

Aluma007 · 01-13-2017, 12:21 AM

well, I've been eyeing the new Firehawk Indy 500 and theyre pretty inexpensive...in a 225/45. I'll probably get them when my OEM tires get worn down some more.

Thank you!

Vital · 01-13-2017, 10:41 AM

sorry if this has been answered before, but would a 225/45 tire effect gearing since it is a taller tire? when you compare 245/40 to the stock tire its almost the same dimensions. just trying to get a better understanding. thanks

yelsew · 01-13-2017, 10:47 AM

Quote:

Originally Posted by Vital

sorry if this has been answered before, but would a 225/45 tire effect gearing since it is a taller tire? when you compare 245/40 to the stock tire its almost the same dimensions. just trying to get a better understanding. thanks

Technically, yes the gearing is taller. BUT, in reality, I think you would have a hard time feeling it, and from what I've read here, not many others mind the 225/45 height difference.
Yes the 245/40 should match the overall diameter of the stock 215/45, but the extra width would be up to you whether you want that or not.

Aluma007 · 01-14-2017, 11:00 PM

The stocks look silly small on a 8inch wheel, and a 235 would be the right width but the diameter would be either way too big or too small depending if 45 or 40. :/ I'll be happy with a squared off profile instead of a stretched look...hence the looking for a super skinny 245/40 but the smallest i found had tread width of 8.5inches...so looks like 225/45 it is.

01-09-2017, 10:45 PM	#1
Aluma007 Senior Member Join Date: Sep 2016 Drives: 2017 Brz Location: TX Posts: 305 Thanks: 105 Thanked 78 Times in 64 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	widest and narrowest summer tires So i got some rota titans 17x8 +45 and used the stock tires...wow, they look stretched!! Its stock suspension and settings so it really looks funny. Anyone know which stock size tires are actually wider than advertised? Or, which 245/40/17's run more narrow than usual? This is my daily so no race tires, but I'd like to at least get the tire to match the 8inch width without looking stretched.

01-09-2017, 10:55 PM	#2
ryoma Senior Member Join Date: Mar 2015 Drives: 2015 Subaru BRZ Limited CWP Location: SoCal Posts: 1,561 Thanks: 34 Thanked 669 Times in 469 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	go 225 wide __________________ My 2015 CWP BRZ Build

01-09-2017, 11:39 PM	#3
finch1750 Undisputed El Presidente Join Date: Jun 2012 Drives: Zenki 37J ZN6 Location: Stockton, CA Posts: 11,593 Thanks: 9,403 Thanked 9,411 Times in 5,270 Posts Mentioned: 374 Post(s) Tagged: 33 Thread(s)	Bridgestone S-04 ran wide from what I compared them to. A 225 would be good on there __________________ "Just like how a strut bar somehow enables you to corner 20MPH faster around a cloverleaf on-ramp, when the reality is, you can do it already but you just don't have to balls to do it." - CSG David

01-12-2017, 03:51 PM	#9
Leonardo Country Boy 4 Life Join Date: Jul 2012 Drives: 19' & 06' Ridgelines, 13' FR-S Location: EUGENE Posts: 5,228 Thanks: 6,719 Thanked 5,293 Times in 2,720 Posts Mentioned: 47 Post(s) Tagged: 1 Thread(s)	I have ran both 225/45 and 245/40 Michelin tires. The difference in height is subtle. I wouldn't worry about it. Also, IcyBrzzz is correct. The 245/40 MPSS is narrower than some 245's. I went from a 245/40/17 MPSS to a 245/35/18 MPSS, the 18's tread width is half inch wider. __________________ I LIKE TIRES!

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01-10-2017, 12:07 AM	#4
jamal Senior Member Join Date: Nov 2011 Drives: Legacy GT Location: compton Posts: 534 Thanks: 9 Thanked 368 Times in 206 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Go to tirerack and click on the specs tab of a tire, it shows the actual width. Any decent 225/45 is going to fit on there just fine and not be stretched.

01-11-2017, 10:34 AM	#5
icybrzzz Senior Member Join Date: Jun 2015 Drives: 2015 Scion frz Location: Toronto Posts: 297 Thanks: 67 Thanked 146 Times in 87 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	245/40 Michelin pilot super sports run really narrow. Slight stretch on my 17x9 wheels. People say they fit more like a 225...

01-11-2017, 09:41 PM	#6
Aluma007 Senior Member Join Date: Sep 2016 Drives: 2017 Brz Location: TX Posts: 305 Thanks: 105 Thanked 78 Times in 64 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	thanks guys, appreciate the help! I thought about the 225/45 but the overall diam is more like half an inch more. My car isnt dropped so it might look like a lift than anything else

01-12-2017, 12:02 AM	#7
jamal Senior Member Join Date: Nov 2011 Drives: Legacy GT Location: compton Posts: 534 Thanks: 9 Thanked 368 Times in 206 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	225/45 is completely fine. 0.4" taller overall means 0.2" difference from hub to ground.

01-12-2017, 09:17 AM	#8
why? Only happy when it rains. Join Date: Feb 2013 Drives: series.blue Location: Harnett county NC Posts: 1,995 Thanks: 5,698 Thanked 1,265 Times in 750 Posts Mentioned: 26 Post(s) Tagged: 0 Thread(s)	every single tire manufacturer will list all the specs you need, including actual tire width on their website.

01-12-2017, 04:20 PM	#10
jamal Senior Member Join Date: Nov 2011 Drives: Legacy GT Location: compton Posts: 534 Thanks: 9 Thanked 368 Times in 206 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Personally I would try to avoid putting a 245 on an 8" rim, even though it has been done. Having the wheel slightly wider gives the tire casing better support. Seriously, get yourself a good 225/45. The set will be like $100 cheaper than 245s and fit better on the wheels.

01-13-2017, 12:21 AM	#11
Aluma007 Senior Member Join Date: Sep 2016 Drives: 2017 Brz Location: TX Posts: 305 Thanks: 105 Thanked 78 Times in 64 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	well, I've been eyeing the new Firehawk Indy 500 and theyre pretty inexpensive...in a 225/45. I'll probably get them when my OEM tires get worn down some more. Thank you!

01-13-2017, 10:41 AM	#12
Vital Senior Member Join Date: Jun 2016 Drives: 2015 BRZ Location: Texas Posts: 693 Thanks: 213 Thanked 336 Times in 254 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	sorry if this has been answered before, but would a 225/45 tire effect gearing since it is a taller tire? when you compare 245/40 to the stock tire its almost the same dimensions. just trying to get a better understanding. thanks

01-14-2017, 11:00 PM	#14
Aluma007 Senior Member Join Date: Sep 2016 Drives: 2017 Brz Location: TX Posts: 305 Thanks: 105 Thanked 78 Times in 64 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The stocks look silly small on a 8inch wheel, and a 235 would be the right width but the diameter would be either way too big or too small depending if 45 or 40. :/ I'll be happy with a squared off profile instead of a stretched look...hence the looking for a super skinny 245/40 but the smallest i found had tread width of 8.5inches...so looks like 225/45 it is.

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