Supercharged Cars - what street tires do you run?

[boostmark]

Be careful here because some of these tires can not handle cold weather. I just installed nitto nt555r 275/40/20 on the rear of my car{ i`m not lowered} with 9.5x20 inch rims. I did take out all the negative camber out of my rear and they seem to really hook up even on somewhat wet streets. Will get real test when dry but 3rd gear held full throttle on my 727 Roush manual.I like the way the 40`s changed the rear end ratio. I have 373`s and now I dont have to shift so soon from 1-3.

Pass on the nitto 555g2`s they don`t hook.

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[Jmtoast]

Be careful here because some of these tires can not handle cold weather. I just installed nitto nt555r 275/40/20 on the rear of my car{ i`m not lowered} with 9.5x20 inch rims. I did take out all the negative camber out of my rear and they seem to really hook up even on somewhat wet streets. Will get real test when dry but 3rd gear held full throttle on my 727 Roush manual.I like the way the 40`s changed the rear end ratio. I have 373`s and now I dont have to shift so soon from 1-3.

Pass on the nitto 555g2`s they don`t hook.

I keep the nannies on under 70 now. I've learned my lesson with some pretty scary high speed fishtailing under 70. Over 70 and it's plenty sticky enough for pump gas level power.

 

[Burkey]

I'm running some 305 coopers on the back. They stick ok so far, but I haven't pushed it real hard yet since I just finished my install recently. Still getting used to it.

One thing that a lot of people forget to mention is the importance of an alignment. The flatter you can get the rear tires, the more rubber youre putting in contact with the road. If you're lowered at all, your camber is working against you. There is a +/-0.5 deg adjustment on the rear that a lot of people don't know about, but if you need more than that, you can get something like this:

https://www.lethalperformance.com/bmr-suspension-uca762-adjustable-camber-links-2015-mustang.html

If you have 305 tires and 4 degrees of camber, you might as well be running 135s.

It’s a good point you raise. So often you see guys squeezing far too much tyre under the car and then having to run stupid camber to get it all to fit, completely negating the extra width.

 

[Jmtoast]

It’s a good point you raise. So often you see guys squeezing far too much tyre under the car and then having to run stupid camber to get it all to fit, completely negating the extra width.

I wasn't aware of this. I have 285's should I do anything.

 

[Burkey]

I wasn't aware of this. I have 285's should I do anything.

Nah, I was talking more about people jamming a 325 (or wider) under the car, then running 3* or more camber to make it all work. Outer 1/3 of the tyre hardly even touches the road type deal.

 

[Jed S.]

Firehawk indy 500s, they hook decently until about 800whp+

 

[crcpdx]

Nah, I was talking more about people jamming a 325 (or wider) under the car, then running 3* or more camber to make it all work. Outer 1/3 of the tyre hardly even touches the road type deal.

No, this isn't true. You can run a 325mm tire without having to add Camber to get it to fit on a 19" wheel. From what I have read a 345 on a 19/11.5 the most you can run.

 

[Burkey]

No, this isn't true. You can run a 325mm tire without having to add Camber to get it to fit on a 19" wheel. From what I have read a 345 on a 19/11.5 the most you can run.

It depends on a lot of variables...
Rim offset, the ACTUAL width of the tyre (as opposed to the manufacturers claimed width), the ride height of the vehicle, etc.
Yes, you might be able to fit a 325 on “some” vehicles, maybe even without venturing into silly camber angles.
It’s going to depend on their static ride height, rim offset and whether the tyre is actually as wide as the quoted figure (some tyres run narrower than others) for a start.
My point was, in an example where you already have a setup that’s running close to the guard, adding extra tyre width will necessitate adding negative camber to make it fit, unless you change the offset etc

 

[crcpdx]

It depends on a lot of variables...
Rim offset, the ACTUAL width of the tyre (as opposed to the manufacturers claimed width), the ride height of the vehicle, etc.
Yes, you might be able to fit a 325 on “some” vehicles, maybe even without venturing into silly camber angles.
It’s going to depend on their static ride height, rim offset and whether the tyre is actually as wide as the quoted figure (some tyres run narrower than others) for a start.
My point was, in an example where you already have a setup that’s running close to the guard, adding extra tyre width will necessitate adding negative camber to make it fit, unless you change the offset etc

I agree with you in principle, but it sounded misleading. I'm running a Michelin tire (known to run wide) and have no issues on a 1/2" drop. But yea if you are on a 20" or have an aggressive drop, you are going to have to "make it work". Anyway the point of my post was not to call you out, but want guys to know you can run a 325 without messing with camber. I'm on 11.5 +56 and it fits perfectly on ford performance springs. If you are not that concerned with handling you could also run a 19/11 with 50 or 52 offset.

 

[khsonic03]

I'm running continental conti extreme contact sport 315/35/20. Whippled 750 whp, 570 tq. -1.1 camber in the rear. I get surprisingly good traction. It's very manageable and predictable.

I mean 1st and 2nd gear are useless, but otherwise I can't complain for street driving

 

[Zelek]

Firehawk indy 500s, they hook decently until about 800whp+

Really? I can go sideways in 2nd gear with E85 and no blower with these tires... lol. I think I'd die with a supercharger.

 

[Jackson1320]

You will never find a tire that will hook with over 700hp on the street and have any kind of decent tread wear. You can try a all season tire that is ok at both like bfg comp2 or Michelin a/s tires. Uhp summer tires and pretty much all track tires will wear out and disappear faster then a fat in the wind. You can run 325s without any modifications on the right wheels

 

[m3incorp]

I run the Mickey Thompson Comp Street tires. There is no tire that can handle all that power if and when you decide to floor it in the lower gears. You will have to learn to respect the power and whatever tire you decide on.

 

[AZ18yote]

I am trying to figure out the same on tires.
I have a 17 RS3 VMP tuned with their 730 hp kit and the stock Cooper RS3-S in 275/35/20 are just not going to do the job. Actually even half throttle will spin and get the nice fish tail going.
Roush only puts 9.5" wide rims on these cars and so limits what you can do.
295's are probably as big as I can go safely. Thought about going with the Nitto NT555-G2's but not sure at this time.
For every tire, somebody will have a positive and a negative comment, so you just don't know.

The Nitto 555 G2 barely hook NA in 315. The 555r would be the way to go if thinking Nitto. Hook dry and won't kill you in the rain. Reasonable price too compared to the Toyos, though they are nice as well.

 

[CORNYOTE]

I run a 325 in -1.2 camber on a steed progressive drop.

no “street tire” is going to hold over 750whp. Hence why i go to an ET-R and why I’m going to a 15x11 wheel and a fat drag radial next lol

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