[Super8]

Everyone,

Looking for some good advice on tire spin. Running 650HP to the wheels. Next step for me is to get that turned into better forward momentum. Obvious choice is tires. Also been contemplating changing the rear end gears to taller gears to better utilize the torque. The car is manual so as you can imagine...not getting much use out of 1st and 2nd gears.

Questions 1: What are the best street/strip tires out there. Look for something sticky...but would like to be able to get 20-30k miles out of them (it's a daily driver). Suggestions?

Question 2: Widest tires/wheels. Anyone recommend any good wheel/tire combinations that will maximize the wheel width without hanging over the fender well?

Question 3: Any input on the idea of changing out the rear gears to taller gears? Pro's/Con's? Recommendations?

 

[cdahl383]

I've got a set of Mickey Thompson ET Street Radials on the back of my Nova and they're great, much better than regular street tires. They hook good on a prepped track when heated up and keep the car going straight when nailing it from a roll on the street. But my car has about 450-460hp at the crank, maybe 370hp to the wheels.

If you have 650rwhp then you're going to need a really wide and sticky tire. I don't think you're going to find anything that will work well that will still have a 20,000 mile treadlife. My M/T's are good for 5,000 miles or so maybe, but they're super sticky too. I know a lot of guys run Nittos on the street, but I've heard they aren't all that great either, just better than street tires.

I would give Mickey Thompson a call and see what they recommend. Just talk directly to the tire manufacturer, they should have plenty of experience with other customer's cars and they should know what would work best for your particular application.

But my guess would be that at a minimum you need a big wide sticky drag radial on the back at a minimum and really need a slick back there if you take it to the track.

I also agree with you about swapping out rear end gears. Your 6 speed should have 3.92 gears out back. Maybe you could swap in a 3.06? Might help with reducing the wheelspin some. But I would try getting the right tire on there first and then see if you need to do a gear swap. Might not be necessary.

 

[williams rt]

Lol this takes me back to 2009 threads. If you are going to get rid of your rear gear, why do you have 650hp because this will kill your 60' time. If the only purpose is to not spin tires, lower the HP. The bottom line is there is not a street and strip tire for a 650 hp car, if it was 1985 and 400 hp was a lot a drag radial might pull double duty.
What kind of power adder are you using? There maybe more options available.

 

[cdahl383]

You could be like my cousin, his Mustang runs 9's and he just drives around with big massive slicks on the back all the time haha! He hooks up great, just not 100% legal haha!

 

[williams rt]

You could be like my cousin, his Mustang runs 9's and he just drives around with big massive slicks on the back all the time haha! He hooks up great, just not 100% legal haha!

Lol did that once years ago and got caught in a thunderstorm, it was scary.

 

[dodge boy]

Everyone,

Looking for some good advice on tire spin. Running 650HP to the wheels. Next step for me is to get that turned into better forward momentum. Obvious choice is tires. Also been contemplating changing the rear end gears to taller gears to better utilize the torque. The car is manual so as you can imagine...not getting much use out of 1st and 2nd gears.

Questions 1: What are the best street/strip tires out there. Look for something sticky...but would like to be able to get 20-30k miles out of them (it's a daily driver). Suggestions?

Question 2: Widest tires/wheels. Anyone recommend any good wheel/tire combinations that will maximize the wheel width without hanging over the fender well?

Question 3: Any input on the idea of changing out the rear gears to taller gears? Pro's/Con's? Recommendations?

I've seen this question asked so many times here but unfortunately there isn't any practical or realistic answer for that much WHP, your either on one side of the fence or the other. :4-dontknow:

 

[cdahl383]

Haha yeah slicks in rain is not good! My cousin got stuck once in the rain too, limped home going 25mph the whole way haha!

I agree, with that much power, I think you're pretty much beyond any dual purpose type tire. A sticky drag radial for the street and a real slick for the track is probably what is really needed.

The M/T drag radials do have some actual tread on them. I wouldn't want to drive them in the rain, but they look like they would do somewhat better than a slick with no tread at all.

 

[Super8]

You might all appreciate that there are solutions if you look hard enough.

Found this: controlboost.com

 

[cdahl383]

Seems like that just sort of kills power so it doesn't overwhelm the tires? Reduces boost or something?

That would definitely work, but you wouldn't be putting full power down to the ground either. If you want to hook up good with full power, a real drag radial will be required, or maybe even a slick at the track, etc.

Seeing how you mentioned above it is a daily driver I would say that control boost thing would be a good option, otherwise you'd be stuck with 5,000 mile drag radials and you'd be going through 3-4 sets a year at least which is kind of silly.

 

[Super8]

Seems like that just sort of kills power so it doesn't overwhelm the tires? Reduces boost or something?

That would definitely work, but you wouldn't be putting full power down to the ground either. If you want to hook up good with full power, a real drag radial will be required, or maybe even a slick at the track, etc.

Seeing how you mentioned above it is a daily driver I would say that control boost thing would be a good option, otherwise you'd be stuck with 5,000 mile drag radials and you'd be going through 3-4 sets a year at least which is kind of silly.

It allows you to control the boost and therefore spin an maximizing 60' times. Also allows you to go full open throttle without going sideways. It does not turn off the boost but ramp it in a controlled fashion through an adjustable actuator.

I still plan on changing up the tires but I think the combination of the two will help improve forward movement instead of spinning in place.

 

[cdahl383]

Sounds like a good plan to me. Spinning isn't winning as they say. Let us know how it works out for you!

 

[msiege5212]

Questions 1: What are the best street/strip tires out there. Look for something sticky...but would like to be able to get 20-30k miles out of them (it's a daily driver). Suggestions?

No way you get 20k out of a performance tire with that much power. Id get a set of rims for the track only and run slicks. Recommend nitto555r drag radials used for street duty they do well in rain, they will not hook as good as a real radial or slick at the track though. The rule for manual transmission is bias ply slicks, I run MT ET Streets at the track, not the radials but the bias plys. Prob wouldnt be caught in the rain with them though.

Question 2: Widest tires/wheels. Anyone recommend any good wheel/tire combinations that will maximize the wheel width without hanging over the fender well?

9.5 to 10" wide is about the widest you want to go for good fitment, get some 17s as well that will give you more sidewall and better straight line traction and still fit over brembos.

Question 3: Any input on the idea of changing out the rear gears to taller gears? Pro's/Con's? Recommendations?

Gears for these cars are very expensive, im guessing you have the 215mm rear end, you might want to go to a 226mm 3.06 getrag swap that can handle the power better with an LSD.

 

[cdahl383]

^ Good advice from an experienced track person.

 

[jpmcclos]

I have eagle f1 supercar on my 09 Mustang (255/45/18 up front, 285/40/18 out back). I've been happy with them, and am going on my second rear set. Can't say how they handle on the track, but they came standard on the 13-14 GT500, which put down 662hp and 631lb-ft...how bad could they be?

 

[cdahl383]

Goodyear Eagle F1's are a nice sticky street tire but they're not going to hook good with anything at or above SRT level power. They put them on the GT500's but if you were serious about racing at the track those wouldn't do much, you'd need some drag radials or slicks to be serious. I've seen guys with GT500's running mid/high 13's like my relatively stock R/T because they just spun down the track. Put some drag radials or slicks on back and they'll suddenly turn low 12's or high 11's or in some cases even faster.