Realistic hp vs. traction?
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
Realistic hp vs. traction?
I am contemplating future mods. I want a street car (on coilovers) that has as much hp as possible,that is still able to maintain traction running a good set of performance/track tires. Not drag radial.....as the purpose of this car is all out performance,NOT DRAG RACING....possible hpde in the future. So my question is...what is realistic hp level at which the car will still hook fairly well and not just burn the tires off...?
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
I certainly know how to drive a sports car.....I was looking for expirienced opinions on what hp makes a well balanced/usable powered street car. Dont care about 800 hp that you can only use at 100mph+....im talking a nasty 0-100 mph street car
Advanced
Joined: Feb 2013
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I think 420 to 450 rwhp michelin ps2 is a good combo fo the street
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
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From: ocean springs mississippi
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Race Director
Joined: Sep 2007
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From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
If your interest is 0-100 then it is a drag car and it won't take much over 400 at the wheel to lose traction on the street without DR's.
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Drifting
Joined: Apr 2003
Posts: 1,389
Likes: 10
From: Jacksonville FL
Depends on the tire. On Hoosier R6 (345x19) I could go wide open in second gear with 600 rwhp and 3.73 rear gear. Same size pilot sport would spin in third and break fourth loose in cool weather with 3.42 rear gear.
Pro
Joined: Apr 2011
Posts: 568
Likes: 4
From: Cambridge
I reckon i make 420 ish rwhp and with hankooks i can unstick in 1st and 2nd at will. I reckon if it's 0-100 (and back to 0?) you want tires will give you most bang for buck.
If it's hpde and driveability (confidence) i'd suggest changing out the poor standard suspension.
If it's bragging rights in the boozer then put a super charger on it!
I have joc stage 1, headers, hi flows, fast, killer bee and i think if i added any more power i'd need to be a much better driver!
Cheers
If it's hpde and driveability (confidence) i'd suggest changing out the poor standard suspension.
If it's bragging rights in the boozer then put a super charger on it!
I have joc stage 1, headers, hi flows, fast, killer bee and i think if i added any more power i'd need to be a much better driver!
Cheers
Racer
Joined: Aug 2011
Posts: 487
Likes: 2
From: Henderson Co
St. Jude Donor '12-'13
I'm over 600 RWHP (Corrected) at 5700 ft and even with drag radials it is a lot to handle on the street.
I had PS2 run flats (Forget those at 600rwhp) and I also have a set of Pilot sport Cup tires, they only hold the power on a track when the tire temperature is way up there, not easy to reach those temps on the street driving normally.
Melting Slicks
Joined: Nov 2003
Posts: 2,155
Likes: 56
From: Escondido CA
i have just over 400 to the rear tires...with kumho's escta's...its pretty slippery when cold less than 60 degrees out........
if i bogged it...i got grip, but pretty slow in the 1/4 mi
if i bogged it...i got grip, but pretty slow in the 1/4 mi
Last edited by bud miller; Mar 31, 2013 at 09:52 PM.
Supporting Vendor
Joined: Jan 2013
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From: Mooresville North Carolina
Agreed!
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Race Director
Joined: Mar 2007
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From: Missouri City Texas
500rwhp and you can stick on the street with a GOOD street tire (not nitto invo's or some similar bullcrap).
I'm at 550rwhp and can hammer on it pretty hard at 40mph with 345/30/19 Khumo XS
You definitely won't be doing any max 0 - xxx runs though on the street on a street tire. Definitely need an R compound for ANY type of low-speed acceleration.
Last edited by FloydSummerOf68; Apr 1, 2013 at 01:30 PM.
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
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From: ocean springs mississippi
500rwhp and you can stick on the street with a GOOD street tire (not nitto invo's or some similar bullcrap).
I'm at 550rwhp and can hammer on it pretty hard at 40mph with 345/30/19 Khumo X
You definitely won't be doing any max 0 - xxx runs though on the street on a street tire. Definitely need an R compound for ANY type of low-speed acceleration.
Race Director
Joined: Mar 2007
Posts: 11,331
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From: Missouri City Texas
Well like I said, I'm at 550rwhp right now and at 40mph I can roll into WOT without spinning my 345 Khumo XS.
500rwhp seems like it would be a really good # for these tires. I still feel like I would benefit from the 345 NT05Rs, but I don't want to give up cornering.
500rwhp seems like it would be a really good # for these tires. I still feel like I would benefit from the 345 NT05Rs, but I don't want to give up cornering.
Drifting
Joined: Dec 2009
Posts: 1,523
Likes: 12
From: OH
I think TQ is a bigger issue than HP. I'm at 470hp and 420tq with a cam/bolt on GS. I run NItto NT05 street tire and she does fine when its warm out.
I think 500rwhp and 450tq would do fine on the street/tires. IMO any more would need a Drag Radial to stick at low MPH.
I agree with 68, Drag radials suck on the corners. Thats the biggest reason why I went with a cam instead of nitrous. I didn't want to run DRs.
I think 500rwhp and 450tq would do fine on the street/tires. IMO any more would need a Drag Radial to stick at low MPH.
I agree with 68, Drag radials suck on the corners. Thats the biggest reason why I went with a cam instead of nitrous. I didn't want to run DRs.
Intermediate
Joined: Sep 2011
Posts: 25
Likes: 0
From: Sinton Texas
I'm over 600 RWHP (Corrected) at 5700 ft and even with drag radials it is a lot to handle on the street.
I had PS2 run flats (Forget those at 600rwhp) and I also have a set of Pilot sport Cup tires, they only hold the power on a track when the tire temperature is way up there, not easy to reach those temps on the street driving normally.
I'm just shy of 700 to the wheels and on MT DR's. Its a hand full, especially from 30 or 40. On the stock tires? Forget it. I kept them on for a minute just to see what it was like. It wasn't even fun.
Race Director
Joined: Mar 2007
Posts: 11,331
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From: Missouri City Texas
That's a good point to remember...big horsepower is NOT fun if you can't use it.