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Old 10-25-2008, 06:01 AM   #1
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Default why smaller tires?

hi everyone, i see that every serious racers cut their tires as small as possible. so whats the advantage of running smaller tires? if you say more flex, why dont u harden the springs for example? if its about the rollout, it can be easily adjusted by the spur pinion combinations. so why cut to 60mm instead of out of box 65mm? if you use smaller tires for the solution to the traction roll, is it better to use bigger tires for low traction tracks? the tracks i run on have low to mid traction, and i have never experienced a traction roll. in this case, can i run 65mm tires? thanks for the replies
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Old 10-25-2008, 07:06 AM   #2
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Originally Posted by musti72 View Post
hi everyone, i see that every serious racers cut their tires as small as possible. so whats the advantage of running smaller tires? if you say more flex, why dont u harden the springs for example? if its about the rollout, it can be easily adjusted by the spur pinion combinations. so why cut to 60mm instead of out of box 65mm? if you use smaller tires for the solution to the traction roll, is it better to use bigger tires for low traction tracks? the tracks i run on have low to mid traction, and i have never experienced a traction roll. in this case, can i run 65mm tires? thanks for the replies
Smaller tires have a faster corner speed
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Old 10-25-2008, 08:06 AM   #3
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I think it has something to do with the angle of the lower suspension arms. When you lower the chassis down with 65mm tires the lower arms are not at a correct angle for best handleing. I could be wrong but my touring car handles better with 59mm tires on it. Besides that there is something about sidewall flex of the tire.
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Old 10-25-2008, 08:28 AM   #4
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The smaller the tire the less rotating weight Which means more punch of the line. Also the tire wont roll over. The bigger the tire the more the tire rolls and will push.
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Old 10-25-2008, 09:47 AM   #5
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Hi

Yes it takes much more power to rotate something heavy than it does to more it in a straight line. Lighter wheels gives better acceleration

Cheers
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Old 10-25-2008, 02:31 PM   #6
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Hey Ziggy have you done anymore work to your Big Block V-1RRR yet??
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Old 10-26-2008, 01:16 AM   #7
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As i understand it's called "roll out". You can alter the ratio by making your front/rear tyres at different sizes. Usually the front tyres will be smaller than the rear tyres, this is called the "split". Go to the serpent website and they heve a drive calculator and you can see what happens when you alter wheel diameters.
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Old 10-26-2008, 09:03 AM   #8
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Less prone to chunking , traction roll , lower unsprung weight , lower weight , more efficient suspension.

But depending on my cash flow I adjust accordingly.
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Old 10-26-2008, 09:18 PM   #9
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Quote:
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Less prone to chunking , traction roll , lower unsprung weight , lower weight , more efficient suspension.

But depending on my cash flow I adjust accordingly.
I like the last bit of your quote so true that is basically what it boils down too I think that quote is great
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Old 10-27-2008, 11:00 AM   #10
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I try to run the biggest size tire that i can, mainly for cost purposes, especially at club races. At bigger races ill cut those suckers way down because it does make a difference.
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Old 10-27-2008, 09:06 PM   #11
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for club races, what tire diameters do you true your front/rear?
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Old 10-28-2008, 01:54 AM   #12
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The smaller the tire the faster it wears.
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Old 10-28-2008, 03:31 AM   #13
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hi, only smaller tyre can make your lap time faster.....with the correct split size , u will notice the difference ...

good luck!
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Old 10-28-2008, 03:52 AM   #14
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The smaller the tire the faster it wears.
Actually, sometimes it works the exact opposite
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Old 10-28-2008, 06:28 AM   #15
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Quote:
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for club races, what tire diameters do you true your front/rear?
It depends on tire wear. If the club race is on a parking lot surface with high wear then I will start with a little taller tire. As you practice and run your quilifiers you will get a feel for what the tire wear is in 5 min. From there you can judge how much tire wear will be needed for the entire main. The key is to have enough tire for the 5 minute qualifier and for the main or if a tire change is needed for the main.



Pass you soon...
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