Tire +/- size guide for FR-S/BRZ

[colHolm]

@Getagrip, I was looking for the statement that only 215s would fit up front.

[MRZ415]

215/50-16 be odd rather than 205/55-16 ?

[takchi]

I think sticking to 17s would be best for this car. The car doesn't command a ton of HP/TQ so if you're looking for performance only, going wider and lower profile is the way to go. 245/40/17 on 17x9 is what I'm looking to do. You won't really lose too much steering feel while gaining more traction. In fact, just going 17x7.5 with a 215/45/17 with a Hankook RS3 or any other sticky tire will be sufficient for stock suspension! Oh well, testing at the track will reveal what is best. Stay tuned for that in the future!

[dsgerbc]

Useful thread on tires should not require people to download some pdf. And should have a lot more info. Here's a good example, that's also relevant since base LGT has the same tire size (different stock offset on wheels though)

[SpeedR]

Originally Posted by Crashoverride

235F 8.5 and 255R 9.5 18's
perfect combo!!! Keep my stock ones for snow tires.

That will make your car push realy bad.

[SpeedR]

Originally Posted by Scion FR-S

245s/255s? Get real. A Toyota engineer was quoted in a review saying that you can't go wider than 215s on the front. Sure you can toss fatties on the rear if you want an understeering car. Kind of defeats the whole raison d'etre for the Toyobaru though - low-limit tossability. And trying to compensate for the understeer through suspension adjustments (harder rear shocks/sway/springs) will cause the ride to suffer.

I have ben under the car it will hold alot more than a 215.

[SpeedR]

Originally Posted by Exhaust

Ive been waiting for a guide like this. Is this a legitimate source? the amount of hooplaw has me worried.

Yes it’s accurate but it’s just info on relative tire sizes not if the tire will fit under the FR-S.


The main point was to help educate people so they don’t put way to big a tire on and then wander why their car was so slow.

[SpeedR]

Originally Posted by dsgerbc

Useful thread on tires should not require people to download some pdf. And should have a lot more info. Here's a good example, that's also relevant since base LGT has the same tire size (different stock offset on wheels though)

Please by all means then disseminate the info in a better more usable way and I will copy it to the first post.

[2fast4you]

Originally Posted by colHolm

@Getagrip, I was looking for the statement that only 215s would fit up front.

I wouldn't waste your time looking for the link. I have seen it, as have many here, however, I believe it was a poor translation and it's nothing to take seriously in regards to physical measurements. Getagrip's picture demonstrates 245/40/17 will fit nicely if mounted to wheels with a proper offset... whether it handles well with that size remains to be seen, but tires wider than 215 will fit in front.

[colHolm]

Originally Posted by 2fast4you

I wouldn't waste your time looking for the link. I have seen it, as have many here, however, I believe it was a poor translation and it's nothing to take seriously in regards to physical measurements. Getagrip's picture demonstrates 245/40/17 will fit nicely if mounted to wheels with a proper offset... whether it handles well with that size remains to be seen, but tires wider than 215 will fit in front.

I was never worried about fitting a larger tire. I didn't see whatever it was that was quoting the "chief engineer" as saying that, so I wanted to because it didn't line up with what Tada-san said on his visit here.

[KKaWing]

Useful tool for compairing tire size from 1010tires.com. It gives you % difference in diameter among other things. Attached a screenie of potential winter tires for 16" wheels.

http://www.1010tires.com/TireSizeCalculator.asp

Oh and hello from a noob ^^

Edit: whoops just realized OP's source for the pdf is the same site/shop... and forgot the link :p

[Bristecom]

Hi Noob! Cute cat!

I'm going to put Bugatti Veyron size tires on there. Should give me at least 50 more horsepower.

But seriously, as I recently said in another post, I wish it came with 225/45/17 tires and 17x7.5 wheels. They'd give you enough space for Brembo calipers and a little more tire for stability and a little more sidewall for comfort and grip. However, I am against increasing the stock diameters unless it were a matter of 1-4 mm. So I'll keep it stock size and keep the stock calipers but replace the tires with Michelin Pilot Super Sports and possibly replace the wheels with the BBS RF in the same size/offset.

[SpeedR]

Originally Posted by KKaWing

Useful tool for compairing tire size from 1010tires.com. It gives you % difference in diameter among other things. Attached a screenie of potential winter tires for 16" wheels.

http://www.1010tires.com/TireSizeCalculator.asp

Oh and hello from a noob ^^

Edit: whoops just realized OP's source for the pdf is the same site/shop... and forgot the link :p

I posted the link in the other thread on tires this has all the reserch done for you hence the PDF. thanks for playing

[taosracer]

225/50/16 all around is what I'll be doing for a track tire (RA-1 or NT-01 most likely)