Whats some good tires to buy these days
09-05-13, 08:43 AM
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Whats some good tires to buy these days
My current set up is :
Fronts are 17x8.5 +31
Rears are 17x9.5 +35
Tires are Hankook V12 EVO's , 255/40 rears and 225/45 fronts
Just looking for a good street setup car has over 600 to the wheels .
Fronts are 17x8.5 +31
Rears are 17x9.5 +35
Tires are Hankook V12 EVO's , 255/40 rears and 225/45 fronts
Just looking for a good street setup car has over 600 to the wheels .
09-05-13, 10:06 AM
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If I had those wheel widths I would run 225/45/17 up front and 245/40/17 in the rear. I would run low psi in the rear.
RE-11, Z2, R-s3, R1R, AD08 are all good sticky extreme sport tires.
The wider the tire the better grip you have left to right, you will suffer in back and forward grip. hence why I said to role with a 245/40/17 tire with lower psi.
If you want more traction in the straight forward direction, go with large sidewall tires and 16" diameter and run lower PSI if straight line speed is what you want.
otherwise corneing I would basically run the same tire size you are running and go extreme performance tires.
RE-11, Z2, R-s3, R1R, AD08 are all good sticky extreme sport tires.
The wider the tire the better grip you have left to right, you will suffer in back and forward grip. hence why I said to role with a 245/40/17 tire with lower psi.
If you want more traction in the straight forward direction, go with large sidewall tires and 16" diameter and run lower PSI if straight line speed is what you want.
otherwise corneing I would basically run the same tire size you are running and go extreme performance tires.
09-05-13, 05:40 PM
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just like this guy did.
09-08-13, 02:24 PM
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I went to SimpleTire.com awhile back and got a set of Uniroyal Touring Trak A/S tires. I love em, especially for the money, but they may not be quite what you're looking for with that kind of HP to the rear wheels!
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09-10-13, 10:42 AM
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Nitto NT05 was the best sticky/ daily driver tire I found. It worked reasonably well in the wet as well considering its very extreme summer tire category. 200 tread gave me one summer with 4 track days and two winters of use on a daily driver. This was on my Evo which are hell on tires in the corners with all of its weight.
09-10-13, 07:49 PM
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Nitto NT05 was the best sticky/ daily driver tire I found. It worked reasonably well in the wet as well considering its very extreme summer tire category. 200 tread gave me one summer with 4 track days and two winters of use on a daily driver. This was on my Evo which are hell on tires in the corners with all of its weight.
09-10-13, 08:24 PM
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With that much power id probably drive around on a drag radial. Could probably do a NT05 front and 5R rear, atleast the look would match. Heard they hook pretty well, nothing like the MT ET street 2's, but much better road manners and work well enough unheated unlike the MT's.
275/40 rear.
Jason
275/40 rear.
Jason
09-11-13, 11:48 AM
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I would run a 225/45/17 front or 235/45/17 front and 245/40/17 or 255/40/17 rear.
These put the tire in stretch and typically have better mechanical grip and control. It does make the car more twitchy feeling to some people.
slide 34 of the michelin engineering response to tire width.
http://www.cb-racing.com/PilotCup_Presentation.PPT
I would run a 225/45/17 and 245/40/17.
These put the tire in stretch and typically have better mechanical grip and control. It does make the car more twitchy feeling to some people.
slide 34 of the michelin engineering response to tire width.
http://www.cb-racing.com/PilotCup_Presentation.PPT
I would run a 225/45/17 and 245/40/17.
09-11-13, 04:34 PM
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I have 255's on my 9" wheels up front, they fit perfect. I have 275's on my 9.5" wheels and they also sit perfect. Putting a narrower tire than whats currently on the front of my car on the back seems silly, especially on a big power car. It would look stupid too.
I dont think he's looking for maximum steering response in a 600rwhp car. All i would be concerned with is getting it to hook up. A 245 tire is gonna spin until 100mph.
Jason
I dont think he's looking for maximum steering response in a 600rwhp car. All i would be concerned with is getting it to hook up. A 245 tire is gonna spin until 100mph.
Jason
09-11-13, 07:30 PM
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yes jay , that's all it pretty much does is spin.. the front tires are fine I just need some rear tires and figured I could put a nice big tire on the back.. not into all that stupid stance stretched tire crap to be honest .. I just want it too look normal ..
09-12-13, 05:57 PM
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Mehcanisms of Tire grip.
Friction
Mechanical Keying
Adhesion
As they are madr from deformable rubber, tires dont exactly follow basic friction theory. So to just say that F=mu*r is strictly wrong. Although it basically does floow this during the elastic range.
Tires only give grip when they are at the correct temperature. this is the most important thing you can remember about tires .
Now on to business.
Tires are the most important part of the suspension, either they are designed to fit it, or the suspension is designed around the tire.
People who say wider tires make more grip because ;''there is more rubber on the road' are wrong. They are both wrong that it makes mroe grip and that there is more rubber on the road.
When you make a tire wider, you alter the contact patch to be wider , but it reduces in length. So depending on sidewall stiffness, a wider tire can actually give less rubber on the road.
The main reason for tires being the size they are is actually heat management. Wider, low sidewall tires will cool better than narrow tall tires. If you can;'t get a tire up to temperatie it will give no grip, if you get it too high you will cook the rubber and ruin the set of tires.
Back to contact patch, you can safely assume that contact patch stays roughly the same area with wide or narrow tires (as long as the load stsys the same). Narroe will have longer contact patches and wide tires will have shorter.
The reason why F1 tires are wide is primarily so that they dont cook (remember they arent just wide, they are fairly high sidewalled), but they ten dto have wider contact patches because they will give better grip going round corners.
A wide tire will generate more lateral force per slip angle making cornering better. F1 cars DO NOT have wide tires for linear acceleration.
Conversely (Mike im goin to have to disagree with you here) drag racers acutally use the tires not becuase of the width, but the tallness. As we know a wider contact patch gives better cornering performance, a narrow but long contact patch is what you want for linear acceleration.
so strangely, drag racers will actually be better with narrow tires. So why do they use wide tires? (remember the most important gip aspect of tires) Temperature! They want as longer contact patch as they can get, but need the width for cooling. (eith 4000+ horsepower you do kind of build temp rather well)
But if you look at the contact patch shape between say, an F1 car or drag racer. (both are considered to use wide tires). The F1 patch will be wider and shorter for good cornering, the drag patch will be longer and narrower (relatively) for good linear acceleration.
So to sum up: Wider tires are not always better. They dont always give better traction. It depends on the car, the situation, the conditions.
Eg. Rally cars use wider tires when on tarmac rallys, and use (surprisingly) very thin tires on ice rallys.
F1 cars used to use narrow tires until aero began to be used in the 60's.
Drag racers acutally want tall tires, width is there to stop the tire being destroyed.
TEMPERATURE!!!!!! rawr.
As example I can think of is formula student cars, they used to use 8inch tires but couldnt get them up to temperature. They switched to 6.5inch and got more grip because they can get them up to temp.
Friction
Mechanical Keying
Adhesion
As they are madr from deformable rubber, tires dont exactly follow basic friction theory. So to just say that F=mu*r is strictly wrong. Although it basically does floow this during the elastic range.
Tires only give grip when they are at the correct temperature. this is the most important thing you can remember about tires .
Now on to business.
Tires are the most important part of the suspension, either they are designed to fit it, or the suspension is designed around the tire.
People who say wider tires make more grip because ;''there is more rubber on the road' are wrong. They are both wrong that it makes mroe grip and that there is more rubber on the road.
When you make a tire wider, you alter the contact patch to be wider , but it reduces in length. So depending on sidewall stiffness, a wider tire can actually give less rubber on the road.
The main reason for tires being the size they are is actually heat management. Wider, low sidewall tires will cool better than narrow tall tires. If you can;'t get a tire up to temperatie it will give no grip, if you get it too high you will cook the rubber and ruin the set of tires.
Back to contact patch, you can safely assume that contact patch stays roughly the same area with wide or narrow tires (as long as the load stsys the same). Narroe will have longer contact patches and wide tires will have shorter.
The reason why F1 tires are wide is primarily so that they dont cook (remember they arent just wide, they are fairly high sidewalled), but they ten dto have wider contact patches because they will give better grip going round corners.
A wide tire will generate more lateral force per slip angle making cornering better. F1 cars DO NOT have wide tires for linear acceleration.
Conversely (Mike im goin to have to disagree with you here) drag racers acutally use the tires not becuase of the width, but the tallness. As we know a wider contact patch gives better cornering performance, a narrow but long contact patch is what you want for linear acceleration.
so strangely, drag racers will actually be better with narrow tires. So why do they use wide tires? (remember the most important gip aspect of tires) Temperature! They want as longer contact patch as they can get, but need the width for cooling. (eith 4000+ horsepower you do kind of build temp rather well)
But if you look at the contact patch shape between say, an F1 car or drag racer. (both are considered to use wide tires). The F1 patch will be wider and shorter for good cornering, the drag patch will be longer and narrower (relatively) for good linear acceleration.
So to sum up: Wider tires are not always better. They dont always give better traction. It depends on the car, the situation, the conditions.
Eg. Rally cars use wider tires when on tarmac rallys, and use (surprisingly) very thin tires on ice rallys.
F1 cars used to use narrow tires until aero began to be used in the 60's.
Drag racers acutally want tall tires, width is there to stop the tire being destroyed.
TEMPERATURE!!!!!! rawr.
As example I can think of is formula student cars, they used to use 8inch tires but couldnt get them up to temperature. They switched to 6.5inch and got more grip because they can get them up to temp.
09-12-13, 07:34 PM
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The 275 will hook better on a 9.5" wheel, its a full inch taller unmounted than the 245, wider + taller = better hook pointed straight in the real world. If this was pure competition, i do not disagree with your observations. My friends 3000gt clicked off low 1.4 60's on what we joked as scooter slicks, i think they were only 6.5" wide slicks on 8" wide RPF1's. Inversely, my friends 04 Cobra runs 275 DRs on the street and can nearly go full power through 1st gear, he makes around 600rwhp with a 2.4KB. It dead hooks with a 315, again, in the real world. He only runs 9.5" tires at the track...So for racing, you are not wrong. For high power street applications, the wider/softer tire seems to always work better.
Jason
Jason
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