Flat Track Tire Help

  • K.D. HART
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Flat Track Tire Help

18 Jul 2014 06:04
#640479
Looking for a 110/90-18 front tire and a 120/90-18 rear tire for a 550 lb flat tracker I'm making
I want a flat track tire that has better than a 40M load/speed rating also.

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  • Forrest
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Re: Flat Track Tire Help

18 Jul 2014 11:04
#640503
K.D. HART wrote: Looking for a 110/90-18 front tire and a 120/90-18 rear tire for a 550 lb flat tracker I'm making
I want a flat track tire that has better than a 40M load/speed rating also.

Try PMing Slayer61. He is a veteran flat track racer and may be able to assist. ;)
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  • slayer61
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Re: Flat Track Tire Help

18 Jul 2014 15:36
#640526
Proper flattrack tires are 19" front and rear. You ll have a time finding 18" DOT tracker tires. Look into Dunlop K70 and K180 maybe? Good luck. Paul
Don't be ridiculous! It's only a flesh wound!

[strike]Wife's little bike... 1984 GPZ 550 Kerker and DynaJet stage I kit[/strike]
Wife's BIG bike......[strike] 1981 GPZ 1100 Kerker and [strike]factory FI[/strike] Mikuni RS34s W/ K&N pods[/strike] SOLD

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  • K.D. HART
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Re: Flat Track Tire Help

19 Jul 2014 11:19
#640598
Thanks Paul.
I found a set of K70 4.00-18 tires at J and P Cycles. I asked the salesman if I could use this same tire on my front 110/90-18 and rear 120/90-18 rims. He said it wouldn't be a problem, but I'd need to reverse the direction of the front tire.
I questioned him to make sure I understood him correctly. He said I know it sounds odd, but that's the way to do it correctly.
Anyone ever heard this before?
www.jpcycles.com/product/ZZ25272

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  • Patton
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Re: Flat Track Tire Help

19 Jul 2014 14:44
#640622
Correct.

When mounting on the rear rim a "front" tire with a directional arrow for forward moving rotation, the rotation should indeed be reversed. In which case the arrow will point in the "wrong" direction,

Am not positive, but thinking this has to do with braking force on the front tire and driving force on the rear tire.

Good Fortune! :)
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  • 650ed
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Re: Flat Track Tire Help

19 Jul 2014 15:11
#640625
That' is true.

However, Dunlop K70 tires are the absolute worst tires I ever rode on in my life. Crappy traction. Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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