LS3 modifications and ¼ mile results
Thread Starter
Instructor
Joined: Mar 2010
Posts: 201
Likes: 14
From: Flower Mound Texas
Tuner suggested them because of the accurate characterization tables for GM PCM tuning. ID850's are at 60% IDC.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Which Hoosiers do you have exactly? Are they streetable at all? I'm just trying to decide on the best tire to throw on a set of 17x9's, and since the TSW's don't weigh much I was thinking of picking a set up to throw some MT 275/40/17's on there, but if the MT 315/35/17's will fit - I'll try them out. Though, you have me curious about Hoosiers now...
Are these yours?
http://www.summitracing.com/parts/hoo-17332/overview/
Are these yours?
http://www.summitracing.com/parts/hoo-17332/overview/
Assuming you have a narrow body, the 315's will be OK for the track, but may hit when street driven over bumps and hard turns. They also crown on 9" wheels and somewhat on 9.5" ones.
The 275 Hoosiers will easily hold 550 rwhp on a 9.5" wheel.
Racer
Joined: Sep 2008
Posts: 255
Likes: 9
From: DFW Texas
Streetable? Only if you don't drive much. The reason Hoosiers average 6# lighter than MT is the tread thickness. Don't expect more than a couple thousand miles from the Hoosiers.
Assuming you have a narrow body, the 315's will be OK for the track, but may hit when street driven over bumps and hard turns. They also crown on 9" wheels and somewhat on 9.5" ones.
The 275 Hoosiers will easily hold 550 rwhp on a 9.5" wheel.
Assuming you have a narrow body, the 315's will be OK for the track, but may hit when street driven over bumps and hard turns. They also crown on 9" wheels and somewhat on 9.5" ones.
The 275 Hoosiers will easily hold 550 rwhp on a 9.5" wheel.
Moreover, I guess I meant to ask if they are somewhat decent for throwing on the car and driving it 100 miles round trip to the strip.
I'm considering sticking with MT ET Street radials just for this reason. It's just extremely enticing to get the Hoosiers due to the insane amount of proven performance a lot of these C6's have shown with them.
Burning Brakes
Joined: Aug 2012
Posts: 811
Likes: 18
From: STL
I ran the 315/30/18 Hoosiers and the 315/35/17s
The 17" version is wider for sure and with the aggressive offset of my 18" 10.5" TSW i would get some contact only at the track it seemed
I would say the 10" RTS with the wider 315 17" version sat outside the fender about the same as the 10.5" 18" TSW with less offset.
P315/30R18 11.0" 26.0" 81.7" 11-12" 11" 11.7" 25
P315/35R17 11.5" 25.6" 81.6" 9-11" 11" 12.6" 26
The hoosiers will not last long at all but in my mind are very streetable in dry weather. I've driven drs and full slicks all over on the street with no issues.
i just put on the 28x10x17 On my car since i have the 3.42s and should put me where i need to be in 4th thru the traps. I would have gone back to the 25.6" DR but just wasn't tall enough with the A6 and 3.42 with the rpm im turning.
Last edited by ShaneFap; Jan 21, 2014 at 12:57 AM.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I just don't have any intentions of changing wheels/tires at the track, but obviously Hoosiers seem to be the most popular tire around here and it's also well proven.
Moreover, I guess I meant to ask if they are somewhat decent for throwing on the car and driving it 100 miles round trip to the strip.
I'm considering sticking with MT ET Street radials just for this reason. It's just extremely enticing to get the Hoosiers due to the insane amount of proven performance a lot of these C6's have shown with them.
Moreover, I guess I meant to ask if they are somewhat decent for throwing on the car and driving it 100 miles round trip to the strip.
I'm considering sticking with MT ET Street radials just for this reason. It's just extremely enticing to get the Hoosiers due to the insane amount of proven performance a lot of these C6's have shown with them.
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
The characterization tables of the GM injectors is excellent, that is what the aftermarket tries to achieve. The manners of your car won't change with LS3/7 injectors.
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Race Director
Joined: Dec 2006
Posts: 12,395
Likes: 2,912
From: Fort Worth, Texas
Streetable? Only if you don't drive much. The reason Hoosiers average 6# lighter than MT is the tread thickness. Don't expect more than a couple thousand miles from the Hoosiers.
Assuming you have a narrow body, the 315's will be OK for the track, but may hit when street driven over bumps and hard turns. They also crown on 9" wheels and somewhat on 9.5" ones.
The 275 Hoosiers will easily hold 550 rwhp on a 9.5" wheel.
Assuming you have a narrow body, the 315's will be OK for the track, but may hit when street driven over bumps and hard turns. They also crown on 9" wheels and somewhat on 9.5" ones.
The 275 Hoosiers will easily hold 550 rwhp on a 9.5" wheel.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I can neither confirm or deny that hypothesis. Maybe we can get someone to weigh new MT's when new and again when corded.