225 Rival S or 245 VR1 (autox)
#1
Junior Member
Thread Starter
Join Date: May 2011
Location: Signal Hill, CA
Posts: 257
Total Cats: 13
225 Rival S or 245 VR1 (autox)
Hey Guys,
Hopefully, you could give some insight on which tires I should get.
Issue: Wheels/tires are not wide/sticky enough to handle boost (instructor's advice). I'm able to spin the rear tires and cannot get the power down without the rear end becoming super twitchy or spinning out.
Tweaks: Decreased tire pressure down to 25psi in the front and 23psi in the rear, disconnected the rear sway bar, and ran full soft on the rear damper and four clicks in the front.
Results: The car was a lot more stable, and the tires didn't spin as much (unless I smash on the throttle and not roll into it. Previously, it would spin when I roll onto the throttle). I was able to bring my time down by 24sec.
Current car setup:
Hopefully, you could give some insight on which tires I should get.
Issue: Wheels/tires are not wide/sticky enough to handle boost (instructor's advice). I'm able to spin the rear tires and cannot get the power down without the rear end becoming super twitchy or spinning out.
Tweaks: Decreased tire pressure down to 25psi in the front and 23psi in the rear, disconnected the rear sway bar, and ran full soft on the rear damper and four clicks in the front.
Results: The car was a lot more stable, and the tires didn't spin as much (unless I smash on the throttle and not roll into it. Previously, it would spin when I roll onto the throttle). I was able to bring my time down by 24sec.
Current car setup:
- FFD evo1 15x8 +32 w/ 205/50 NT05
- 949's dual duty configuration (close to it)
- Front
- Camber: -2.0°
- Caster: 4.0°
- Toe: 0
- Rear
- Camber: -2.0°
- Toe: +1/8"
- Front
- Kosei K8R 15x9 +35 (TireRack currently has a sale on them. $105 per wheel)
- 225/45/15 Rival S or 245/40/15 VR1
- Same alignment?
#5
Junior Member
Thread Starter
Join Date: May 2011
Location: Signal Hill, CA
Posts: 257
Total Cats: 13
The car has over 200whp, and it's just a nightmare to drive fast. The car is currently trying to hit 949's dual duty settings, but my alignment bolts are maxed out (at least that's what the alignment shop said). I do have the extended lower ball joint I need to install. Hopefully, that will get me into -3° in the front.
Is there a reason why the rivals would be faster? Better compound?
Is there a reason why the rivals would be faster? Better compound?
#9
Junior Member
Thread Starter
Join Date: May 2011
Location: Signal Hill, CA
Posts: 257
Total Cats: 13
I'm going to stop by Barns and Noble to see if they have a current issue of GRM, I'm interested in reading their article.
I found this review over on the frs forums:
Maxxis VR-1 (New 200TW tire) - Scion FR-S Forum | Subaru BRZ Forum | Toyota 86 GT 86 Forum | AS1 Forum - FT86CLUB
Looks like rivals or re71r are popular for autox
I found this review over on the frs forums:
Maxxis VR-1 (New 200TW tire) - Scion FR-S Forum | Subaru BRZ Forum | Toyota 86 GT 86 Forum | AS1 Forum - FT86CLUB
Looks like rivals or re71r are popular for autox