2012 BRZ/FR-S Stock Class Autocross Discussion

[xwd]

Tirerack has them but they aren't in the list of wheels for the BRZ. They are however in the list for the WRX.

http://tinyurl.com/84r5px9

[Kido1986]

Thanks.that's why I didn't see.

[Miniata]

Originally Posted by dwx

Wish there were a few more wheel options available in 17x7. Right now I'm looking at the Kosei K1-TS, they are <$800 17x7 +50.

That's what I'm planning to use on my BRZ when it gets here in a couple of weeks. I've got a set I've been using on our Forester XT for a year or two, and I'll be taking those taller tires off and putting some Star Specs on. I called Tire Rack to see if there was any reason they wouldn't fit on the BRZ since they aren't listed on the site, and they called back after talking to their tech dept and said it shouldn't be a problem.

[MTeator]

These claim to be 12.5lbs

http://www.veloxwheels.com/wheels/pg-5s-forged

[Sccabrz192]

During the break in period the shift point SUCKS because it drops you right into that dip in the powerband, otherwise this thing has not disappointed. My favorite part of this car so far has been the transmission, such a HUGE departure from the WRX trans.

Picked it up yesterday, promptly had to see how the number plates looked.

[xwd]

Originally Posted by MTeator

These claim to be 12.5lbs

http://www.veloxwheels.com/wheels/pg-5s-forged

I've found through some Interweb searching the wheels are actually 14.0lbs. Seems par for the course since someone above bought another set of them and they were slightly heavier than advertised. 14.0 is still pretty light, but I haven't found anyone selling them for <$375/wheel which is too much.

[MTeator]

Yeah, My Traklites which are the same weight were 268/ea all said and done (incl center caps & ring. I bought lug nuts separate.) I hope they make another run of them.

[raventare]

Kosei K5R 17X7 at Tire rack are also 14lbs for $199 and +48...if anyone cares they are only painted grey.

[xwd]

I saw those too but they are back ordered until August so I think I'm going to go with the K1s

There has been a lot of talk about RTR and street tires but does anyone have an idea as at as race tires go and sizing? I'm guessing 245/40 would be the best starting point but 225/40/17 may keep you out of the torque dip, with the disadvantage of maybe having to go to 3rd gear not to mention being lower profile. I ran 245/40 Hoosiers on my 06 WRX an that seemed to be the best size but it's a way different car.

[Sccabrz192]

Originally Posted by dwx

I saw those too but they are back ordered until August so I think I'm going to go with the K1s

There has been a lot of talk about RTR and street tires but does anyone have an idea as at as race tires go and sizing? I'm guessing 245/40 would be the best starting point but 225/40/17 may keep you out of the torque dip, with the disadvantage of maybe having to go to 3rd gear not to mention being lower profile. I ran 245/40 Hoosiers on my 06 WRX an that seemed to be the best size but it's a way different car.

Stick with 245s. More grip will outweigh the minimal gearing changes.

[xwd]

Yeah those are my thoughts as well. 245/40 is just a hair under the stock diameter. The only thing now I'm worried about is the K1s are +50 and with the stock offset +42 I'm hoping they fit okay. Not really wanting to run spacers. I know Bill above fit some +53s with 235s but Hoosiers are wiiiide.

[MTeator]

if you're going to run a national event or your region has fast courses, the taller tire is what you're going to want I think... 245/45 might fit with +42's. You're going to want spacers for sure with the K1's. See if you can find out the real world width difference between a 245/45 star spec and the hoosiers. The star specs fit with almost 2 fingers of clearance with a 42mm offset and before camber adjustment.

[xwd]

I guess the stock wheels are +48 not 42. The section width of a 225/45/17 star spec is 8.9" on a 7.5" rim. A 245/40/17 A6 is 10" but measured on a 9" rim... My guess is on a +50 rim it isn't going to fit without a spacer, with more camber.

I tried running larger diameter tires on my old SM WRX to get some more out of 2nd gear and I hated it and it didn't keep me from having to shift into 3rd most of the time. I used to autox in milwaukee which has a large lot with fast courses. Now I'm in Atlanta where things are tighter and slower.

[Scooby South]

NEWS: I have it on Good Authority... that the BRZ/FRS is 'OFFICIALLY' C-stock..as of about 3 weeks ago... the new Fastrack will indicate that... We all kinda knew that anyways...didn't we???

Bill