Shooting for 12's on street tires
06-14-2015, 06:27 PM
#1
Shooting for 12's on street tires I've gotten 12's on drag radials, but I feel like I haven't accomplished much unless I've done it on street tires. The track I run at is slightly uphill, and usually has a DA of 2500'. I've attached a pic so you can see. Needless to say high trap speeds don't happen. Track prep is decent. I need to know what rpm to launch at. I'm thinking 1300rpm, getting off the line and rolling into the throttle. Then again I suck, as I've only gotten 2.2 sec. 60' times. What rpms do you leave at, and what is your best 60'? Car is an m6
06-14-2015, 08:17 PM
#4
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on MT street comp tires which are a street tire for wet n dry roads i ran a 12.9'something think it was a 12.93@106 with 1.9xx 60' i think ill dig up the slip then after my stall i went 12.63@106 with a 1.79 60' untuned same tires, i did a small burn out ran 21psi best 60' times were when i brought it up to 1100-1300 rpm and flashed it from there rolling into it not wot off the line with stock stall and 3600 thats in it now. the da here is typ around 2000-2500,98' stock ls1 157xxx miles with bolt-ons n free mods and 3.73's hope that helps
06-14-2015, 08:36 PM
#6
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After stall same street tires above mods plus lca and relocation brackets single adj rear qa1s and front qa1 coilovers single adj also 300# front spring lowered 1" in the front and 5/8" in the rear with stock rear spring w/ heat hose mod
06-14-2015, 10:16 PM
#7
on MT street comp tires which are a street tire for wet n dry roads i ran a 12.9'something think it was a 12.93@106 with 1.9xx 60' i think ill dig up the slip then after my stall i went 12.63@106 with a 1.79 60' untuned same tires, i did a small burn out ran 21psi best 60' times were when i brought it up to 1100-1300 rpm and flashed it from there rolling into it not wot off the line with stock stall and 3600 thats in it now. the da here is typ around 2000-2500,98' stock ls1 157xxx miles with bolt-ons n free mods and 3.73's hope that helps
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06-15-2015, 08:13 AM
#9
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I've ran them as low as 18# at the track and high as 30# which is how I drive it to track 21 seemed to be what did the best for me. I air them back up before I head home but I have had to drive back at 20psi before my air tank leaked down. Those tires are great I love them. I think with I little more time at the track on them and u'll get what ur looking for
06-17-2015, 02:56 AM
#11
so just out of curiosity, is 13.5 at 105 w/2.1 60ft good for stock 2002 trans am on HORRIBLE street tires (sumitomos) ??? that was my best last time out ... going back tomorrow with bfg sport comp 2's, ssra, potz tb & 9lb battery vs. 35lb stocker last time.
06-17-2015, 08:10 AM
#12
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A4 or m6? And with a 1.9 60' or better u'd be dipping in the high 12.9s I ran a 12.93@106 1.9xx 60' with stock motor 3.73s exhaust k&n some free mods good street tires the mt street comp I mentioned earlier
06-17-2015, 10:11 AM
#13
a4 stock stall, but yea a 1.9 60 would be great - i know i can get that with dr's leaving at 17-1800, - at least these bfg's are night & day from the sumi's though so possibly a 2.0 at least tonight, & with that 20lbs off the front end with lightweight battery we shall see i guess. i'm debating to take my front sway bar off or not, as i've read it's 15 lbs less weight up front & also assists in launching/weight transfer.
06-18-2015, 10:13 AM
#15
horrible night last night ... best i could cut was a 13.68 with a 2.2 60 ... ran a 13.7x with a 2.1 60 ..... 3 other trans ams also there 99-02's - one with fast 92, Lt's & full exhaust with dr's ran a best of 13.4 ... another guy fully stock formula 02' but with toyo dr's best time was a 13.6 w/ 1.9 60 ft, so heck i guess i did alright compared to the other trans ams/formulas there actually ... but i'm thinking with dr's i would have cut at least a 1.9 60 with a 13.3 et ... don't know what was up with the guy that has the fast 92, Lt's & dr's, ... it was 90 degrees outside .... but basically lesson learned for ME PERSONALLY at least is no dr's = waste of my time. i'll be going back with hoosiers nothing less.
06-20-2015, 01:32 AM
#16
horrible night last night ... best i could cut was a 13.68 with a 2.2 60 ... ran a 13.7x with a 2.1 60 ..... 3 other trans ams also there 99-02's - one with fast 92, Lt's & full exhaust with dr's ran a best of 13.4 ... another guy fully stock formula 02' but with toyo dr's best time was a 13.6 w/ 1.9 60 ft, so heck i guess i did alright compared to the other trans ams/formulas there actually ... but i'm thinking with dr's i would have cut at least a 1.9 60 with a 13.3 et ... don't know what was up with the guy that has the fast 92, Lt's & dr's, ... it was 90 degrees outside .... but basically lesson learned for ME PERSONALLY at least is no dr's = waste of my time. i'll be going back with hoosiers nothing less.
06-20-2015, 10:25 AM
#17
Denom with a M6 you'll do a lot better with a bias ply over a DR. I've gone 1.81 60' leaving at 3500 with M/T ET Street bias plies with room for much improvement. Even M/T recommends bias plies for manuals. Check out this Super Chevy article.
http://www.superchevy.com/how-to/081...#__federated=1
The Mickeys are DOT rated but not really a good street tire like a DR would be.
http://www.superchevy.com/how-to/081...#__federated=1
The Mickeys are DOT rated but not really a good street tire like a DR would be.
06-22-2015, 02:39 AM
#18
...no i was on street tires ... i was just saying there was another bird with dr's - "one with fast 92, Lt's & full exhaust with dr's ..." , & here i was just saying if i had dr's - "i'm thinking with dr's i would have cut at least a 1.9 60 with a 13.3 et ... " - sorry for any misunderstanding !