Tire Size Examples for 18x8.5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Devin11498 · 09-24-2018, 10:54 AM

Recently purchased a set of WORK Emotion D9R from japan for a really good deal. Traditionally would go with a 9.5 but like said i could not pass this up. Now im trying decide what size tire to run. If anyone here has a 18x8.5 wheel with one of the following tire sizes drop a pic

225/35/18
235/40/18

Mainly considering the 225 or 235 but also curious to see the stretch on a 215

215/35/18
215/40/18

Much appreciated

meWant · 09-24-2018, 11:33 AM

I had run 235/40/18 Hankook Ventus V12 evo2

But presently I run 255/35/18 Firestone Firehawk Indy 500.
I will try to get pictures up soon of the current set up

Devin11498 · 09-24-2018, 12:45 PM

Quote:

Originally Posted by meWant

I had run 235/40/18 Hankook Ventus V12 evo2

But presently I run 255/35/18 Firestone Firehawk Indy 500.
I will try to get pictures up soon of the current set up

Okay thank you. Do you have any closer pics of the 235, trying to see how much stretch if any on a 235 on a 8.5 wheel.

arkanist · 09-24-2018, 01:05 PM

235 is ideal for 8"-8.5" wide wheels, there shouldn't really be much if any stretch. 225 is considered the minimum for 8.5" but you could totally stretch a 215.

arkanist · 09-24-2018, 01:09 PM

https://tyrestretch.com/8.5-215-35-R18/
https://tyrestretch.com/8.5-215-40-R18/
https://tyrestretch.com/8.5-225-35-R18/
https://tyrestretch.com/8.5-225-40-R18/

Devin11498 · 09-24-2018, 01:34 PM

Quote:

Originally Posted by arkanist

235 is ideal for 8"-8.5" wide wheels, there shouldn't really be much if any stretch. 225 is considered the minimum for 8.5" but you could totally stretch a 215.

I know that haha i actually have all those links saved on my phone. I just more or less want to see better pictures of a 225/35 and 235/40

Tristor · 09-24-2018, 01:48 PM

Quote:

Originally Posted by arkanist

235 is ideal for 8"-8.5" wide wheels, there shouldn't really be much if any stretch. 225 is considered the minimum for 8.5" but you could totally stretch a 215.

I'm running 225/40/18 on 18x8.5" wheels and while it does seem to have a little bit of stretch, it seems to perform flawlessly and even then it has increased the overall diameter of the wheel/tire combo. (625mm to 637mm) which makes my speedo off slightly. 235/40 would be around 645mm diameter, so a full 20mm more than stock tire/wheel combo.

Why is there a belief that 235/40 is more proper than 225/40 in this case? 245/35 is closest in diameter (625mm to 629mm) and has almost non-existent speedo difference.

StraightOuttaCanadaEh · 09-24-2018, 01:54 PM

225/40/18

https://instagram.com/p/Biai4fIFnjZ/

Devin11498 · 09-24-2018, 01:55 PM

Quote:

Originally Posted by Tristor

I'm running 225/40/18 on 18x8.5" wheels and while it does seem to have a little bit of stretch, it seems to perform flawlessly and even then it has increased the overall diameter of the wheel/tire combo. (625mm to 637mm) which makes my speedo off slightly. 235/40 would be around 645mm diameter, so a full 20mm more than stock tire/wheel combo.

Why is there a belief that 235/40 is more proper than 225/40 in this case? 245/35 is closest in diameter (625mm to 629mm) and has almost non-existent speedo difference.

Do you have any photos of the small stretch? I dont really care about speedo stuff lol

Devin11498 · 09-24-2018, 02:00 PM

Quote:

Originally Posted by StraightOuttaCanadaEh

225/40/18

https://instagram.com/p/Biai4fIFnjZ/

oooo that looks like what i just about want. maybe i can get slightly more lip poke from a 235/35 since the sidewall in slightly smaller

StraightOuttaCanadaEh · 09-24-2018, 02:04 PM

Quote:

Originally Posted by Devin11498

oooo that looks like what i just about want. maybe i can get slightly more lip poke from a 235/35 since the sidewall in slightly smaller

go for it. Look at my IG in case you wanna see more pics. I don't have one focusing just on the wheels unfortunately. There is a bit of a stretch though.

Devin11498 · 09-24-2018, 02:06 PM

Quote:

Originally Posted by StraightOuttaCanadaEh

go for it. Look at my IG in case you wanna see more pics. I don't have one focusing just on the wheels unfortunately. There is a bit of a stretch though.

i just followed you. You have some pretty good photos tho to give me a ideas fitment wise.

meWant · 09-24-2018, 03:07 PM

Quote:

Originally Posted by Devin11498

Okay thank you. Do you have any closer pics of the 235, trying to see how much stretch if any on a 235 on a 8.5 wheel.

I can try finding some.

Leonardo · 09-24-2018, 03:31 PM

Quote:

Originally Posted by Devin11498

oooo that looks like what i just about want. maybe i can get slightly more lip poke from a 235/35 since the sidewall in slightly smaller

The number of 235/35/18 tires available is close to ZERO.

OP, tire width varies on brand and model quite a bit. Meaning a Michelin 225/40 will most likely look different than a 225/40 (enter brand) on a 18x8.5.

Example:
MPSS 245/35/18 tire = 9.2 tread width
MPS4S 245/35/18 tire = 8.4 tread width

09-24-2018, 10:54 AM	#1
Devin11498 Member Join Date: Oct 2017 Drives: 2013 Subaru Brz Limited Location: South Carolina Posts: 38 Thanks: 23 Thanked 8 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Tire Size Examples for 18x8.5 Recently purchased a set of WORK Emotion D9R from japan for a really good deal. Traditionally would go with a 9.5 but like said i could not pass this up. Now im trying decide what size tire to run. If anyone here has a 18x8.5 wheel with one of the following tire sizes drop a pic 225/35/18 235/40/18 Mainly considering the 225 or 235 but also curious to see the stretch on a 215 215/35/18 215/40/18 Much appreciated

09-24-2018, 01:54 PM	#8
StraightOuttaCanadaEh Wes Join Date: Feb 2017 Drives: Artisan Spirits '17 86 Location: Toronto Posts: 2,794 Thanks: 1,165 Thanked 1,674 Times in 994 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	225/40/18 https://instagram.com/p/Biai4fIFnjZ/ __________________ Instagram: @gt86ws

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09-24-2018, 01:05 PM	#4
arkanist Senior Member Join Date: May 2016 Drives: 2016 BRZ Limited, Stock Location: Seattle, WA Posts: 243 Thanks: 183 Thanked 154 Times in 94 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	235 is ideal for 8"-8.5" wide wheels, there shouldn't really be much if any stretch. 225 is considered the minimum for 8.5" but you could totally stretch a 215.

09-24-2018, 01:09 PM	#5
arkanist Senior Member Join Date: May 2016 Drives: 2016 BRZ Limited, Stock Location: Seattle, WA Posts: 243 Thanks: 183 Thanked 154 Times in 94 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	https://tyrestretch.com/8.5-215-35-R18/ https://tyrestretch.com/8.5-215-40-R18/ https://tyrestretch.com/8.5-225-35-R18/ https://tyrestretch.com/8.5-225-40-R18/

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