Which will give me a better 60'? A 275/50/15 MT drag radial on a 15x8" rim or a 315/35/17" on a 17x10.5" rim?
Which is better?
- Thread starter jivepepper
- Start date
Tim2002GT
Founding Member
I think the 15" would probably give you a better launch. The bigger sidewall should help a little. As long as your running a low psi in your tires.
hotmustang331
Active Member
Both important. But you never see any drag cars on 17s.
Main reason to go 15s is weight....they weigh less and have less rotational mass. You will overall gain more with the 15s, even if by chance they wont 60' quite as well as wider tires.
Main reason to go 15s is weight....they weigh less and have less rotational mass. You will overall gain more with the 15s, even if by chance they wont 60' quite as well as wider tires.
CobraRed_96_GT
Active Member
Plus im assuming even tho it's close that the 15 tires are shorter? This would increase your gearing in a way me thinks
hotmustang331
Active Member
Depends on prefrence. In theory you can run a smaller tire on a 15 inch rim than a 17" (2 inches obviously), but noone I know of does that. 26s for most all regular street tires and 28s for more track action, since the 28s have a larger contact patch, they hook up better. You dont usually want to go smaller....just do that with your rearend gears and run the smallest size(re width usually) tire that allows you to hook up.
04fullitgt
I shower with poo
I would think that the 15in. would be better IMO since your bound to have some flex in the sidewalls with a hard launch. Just my opinion tho, but what do I know.....I run a street tire
blackfang
Founding Member
The 15" will be better. More sidewall flex keeps the tire in place and a better contact patch than a 17" tire. The quickest and fastest cars are running a 15" tire. A 17" can do the job, but the 15" is better.
I went with a 15x10.5 ET Street on a 15x8" rim. I hope it tracks well on the big end. Mixing radial and non radial scares me a little.
Theres a picture floating around somewhere of a guy with the 315 MT DR's and he was able to pull the front end way up on the launch so I think that the tire will only go so far and the suspension will eventually take over. Although the lighter wheel in the 15" sounds like a good thing.
I did pull a 1.66 60' with 315/35/17 Mt's I have now. The was with a completely stock suspension. That was on a hot day. They are just not consistent.
The et streets or basically a dot approved slick.
BlackGT4.6
New Member
CobraRed_96_GT
Active Member
hotmustang331
Active Member
^yes haha
But to be honest with you, a 17inch STICKY drag radial will put more strain on the axles then a 15inch DR. Sidewall flex of the 15 absorbes some of the instant shock of the launch and helps the drivetrain.
But to be honest with you, a 17inch STICKY drag radial will put more strain on the axles then a 15inch DR. Sidewall flex of the 15 absorbes some of the instant shock of the launch and helps the drivetrain.
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