225/50/17? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

JACK 8URT0N · 09-04-2012, 02:18 PM

On 17x7.5 TE37s. I searched. I see everyone picking 45 over 50. is 50 really too big? I don't plan on doing springs any time soon, so I wanted to fill that wheel gap a bit.

karma003 · 09-05-2012, 07:30 AM

My first thou is, Idk y ud want a thicker tire that way. I would think it'd throw off the calibration for the speedometer

DSPographer · 09-05-2012, 08:43 AM

Quote:

Originally Posted by JACK 8URT0N

On 17x7.5 TE37s. I searched. I see everyone picking 45 over 50. is 50 really too big? I don't plan on doing springs any time soon, so I wanted to fill that wheel gap a bit.

Well looking at Michelin Primacy HP tires the revs per mile of the stock tire is 844, and for the 224/45 it is 833, but the 225/50 is 803. So the 225/45 will be 1.3% taller and the 225/50 will be 5.1% taller than stock. The 1.3% difference is not that significant; but, I think making all your gears 5.1% taller and having your real speed be 5.1% higher than the speedometer reads is too big a difference for most owners.

MattR · 09-05-2012, 09:09 AM

Best movie ever, Mr. Burton.

TheRipler · 09-05-2012, 09:09 AM

It will most likely rub at full lock on the front. I have some old 225/45 19s on the car now, which are similarly sized, and they rub. Not a good way to fill it out.

JACK 8URT0N · 09-05-2012, 09:47 AM

Thanks guys, I'll stick with 45. I appreciate the input.

Kurenai · 09-05-2012, 11:30 AM

There have also been reports of abs/traction control/stability control issues when rolling diameter differs by more than ~3% of stock

TheRipler · 09-05-2012, 12:55 PM

Quote:

Originally Posted by Kurenai

There have also been reports of abs/traction control/stability control issues when rolling diameter differs by more than ~3% of stock

If all the tires are the same size, how would it know?

dori. · 09-06-2012, 01:34 AM

Quote:

Originally Posted by TheRipler

It will most likely rub at full lock on the front. I have some old 225/45 19s on the car now, which are similarly sized, and they rub. Not a good way to fill it out.

what? how would you know if it would rub or not without knowing the offset?

TheRipler · 09-06-2012, 03:25 AM

Quote:

Originally Posted by dori.

what? how would you know if it would rub or not without knowing the offset?

I'm not sure what you read.

*most likely* = probable = better chance it will than not

Feel free to give it a shot, if that's what you want to do.

dori. · 09-06-2012, 07:43 AM

Sure, if you answer my question first.

09-05-2012, 07:30 AM	#2
karma003 auto-crosser/drifter Join Date: Jul 2012 Drives: 2013 scion FR-S black M/T Location: corpus christi, TX Posts: 357 Thanks: 496 Thanked 51 Times in 40 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	My first thou is, Idk y ud want a thicker tire that way. I would think it'd throw off the calibration for the speedometer __________________ My build http://www.ft86club.com/forums/showthread.php?t=12770

09-05-2012, 09:09 AM	#4
MattR Running in the 90s Join Date: Apr 2012 Drives: 2014 Scion FR-S Monogram Location: Wilmington, NC Posts: 286 Thanks: 359 Thanked 89 Times in 63 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Best movie ever, Mr. Burton. __________________ 藤原とうふ店（自家用） MattR's Tofu Runner

09-06-2012, 07:43 AM	#11
dori. Señor Member Join Date: Dec 2011 Drives: white BRZ 6MT Location: Rockland, NY Posts: 1,554 Thanks: 740 Thanked 374 Times in 248 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Sure, if you answer my question first. __________________ twitter \| instagram \| #nicetwins tumblr photoblog

09-05-2012, 11:30 AM	#7
Kurenai Member Join Date: May 2012 Drives: 2013 Scion FR-S Hot Lava 6AT Location: United States Posts: 53 Thanks: 1 Thanked 14 Times in 10 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	There have also been reports of abs/traction control/stability control issues when rolling diameter differs by more than ~3% of stock

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