Which is better?

jivepepper

Founding Member

Jun 19, 2002

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Under a Sombrero. in WV.

Nov 5, 2007

#1

• Nov 5, 2007

• #1

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?

 

Tim2002GT

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Apr 10, 2002

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Tulsa, Oklahoma

Nov 5, 2007

#2

• Nov 5, 2007

• #2

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.

 

jivepepper

Founding Member

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Under a Sombrero. in WV.

Nov 6, 2007

#3

• Nov 6, 2007

• #3

Tim2002GT said:

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.

Click to expand...

Just wondering which is better width or side wall?

 

hotmustang331

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Apr 29, 2004

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#4

• Nov 6, 2007

• #4

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.

 

CobraRed_96_GT

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May 20, 2006

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#5

• Nov 6, 2007

• #5

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

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#6

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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.

 

Superhereaux

chicks make me feel inadequate

Founding Member

Jul 30, 2002

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South Texas

Nov 6, 2007

#7

• Nov 6, 2007

• #7

you're comparing a drag radial to a wide street tire?


go with the 15's

 

jivepepper

Founding Member

Jun 19, 2002

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Under a Sombrero. in WV.

Nov 6, 2007

#8

• Nov 6, 2007

• #8

Superhereaux said:

you're comparing a drag radial to a wide street tire?


go with the 15's

Click to expand...

No I'm comparing a 315/35/17" DR to a 275/50/15" DR. Both are 26 inches tall.

 

04fullitgt

I shower with poo

Nov 13, 2006

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Crest Hill, Illinois

Nov 6, 2007

#9

• Nov 6, 2007

• #9

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

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Richmond, Va

Nov 6, 2007

#10

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• #10

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.

 

jivepepper

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Under a Sombrero. in WV.

Nov 6, 2007

#11

• Nov 6, 2007

• #11

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.

 

R

rugster

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Nov 6, 2007

#12

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• #12

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.

 

jivepepper

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Under a Sombrero. in WV.

Nov 6, 2007

#13

• Nov 6, 2007

• #13

rugster said:

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.

Click to expand...

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.

 

jivepepper

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Under a Sombrero. in WV.

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#14

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• #14

oops

 

BlackGT4.6

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#15

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• #15

if nothing else you will be better off with the 15" by weight alone.

 

CobraRed_96_GT

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#16

• Nov 6, 2007

• #16

would upgraded axles then be recommended w/ 15" slick?

 

hotmustang331

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#17

• Nov 6, 2007

• #17

^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.