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Tire Size choices in 12" (available stateside)

57K views 155 replies 60 participants last post by  kevinnolde 
#1 ·
What brands and sizes are available (In the USA) in the 12" wheel diameter?



I'm trying to collect all the flavors possible for an informational sticky in this forum... So post away people... :cool:
 
#2 ·
Bridgestone BT601SS 100/90-12" front YCX 120/80-12" rear YCX (ycx = soft) Unavailable to the US market is the BT39SS-wet





I'd rate this tire/s a 2 thumbs up in air temps up to 90 degrees on an aggressive surface.



Also available is the Dunlop TT91GP The newest RACE tire is the TT92GP and TT72-wet but only if you buy them from Japan.



Sava has a medium, soft and wet race tire.



These 3 companies are supplying the premium "race tires" for mini motorcycle road racing.



Savas can be purchased from Savawest.com directly as at this time they control sales so you the racer gets the freshest tires possible.



Dunlops and Bridgestones can be bought from a multitude of cyber stores, you might get fresh tires, you might get old tires, we have no idea how they have been stored and handled..........
 
#8 ·
teddy said:
Hey Cam have you personally done any testing at Palmetto with those Sava's yet?



When i spoke with Denny he said he needed to call you.
No, I just got them before the last Florida race and I did not ride on them. I will be trying ALL the tires next year in an effort to win on the KX65. With competitive pricing on all the tires, I will vote my favorite after a hard days work......... or a fun day of racing.
 
#9 ·
Cool i know you have transponders and such at all the semra events so detailed notes would be sweet!



A real test so to speak. I'm sure some or your semra riders might wanna test some 12" tires during some of the saturday practices? I mean if theres a tire that works better with real lap times to back it up?



We now have 3 lap timers so we can use these at all our local events up north here for real feed back, real time into a lap top and since we have 3 CRII's with the same suspension but diff engine mods we can still get some quality information:cool: With the extra sets of wheels it'll be easy to test each bike with diff tires.
 
#10 ·
Shinko Tire pics

Heres a few pics of the shinkos mounted to a bone stock CRII125, the front rim was retrued off set to just give enough clearance for the fork leg (the stock front rims are not centered 100%). Note the very wide profile for a 110/90-12" tire. these 2 tires have been on this bike and run at 5-6 trackdays with about a total of 15 hours on them. Not the fastest rider......... but they work for him. they worked very well in the packed clay on a outdoor track with plenty of berms, jumps, hills, etc..
 

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#11 ·
Hey Teddy,

I just received a BT601 SS in the YCY compound from Tucker Rocky. I used them this weekend at Kart 2 Kart and they worked pretty well. The rear spun up a little easier than the YCX compunds that I did have. I will let you know if it lasts any longer. Just thought you might want to know this since you do alot of tire testing.
 
#15 ·
In my opinion the Michelin's are not that good. I have used the Boppers and the Pilot SC and they just do not work as good as the Dunlops or the Bridgestones. The Michelins like to slide alot more than the Dunlops or the Bridgestones. I have used the 130 rear on a 2.15 rim and the only positive that I noticed was more ride height.
 
#21 ·
Kurlon said:
Indoors, cold dusty concrete, any advantage to a rain vs regular tire?


A rain would probably work very well in that situation. Rain tires are VERY soft and designed to grip when cold. I remeber doing a track day in the rain and as the track dried I was aiming for the puddles to keep the tires cool, so I wouldn't have to change my tires back. They probably wouldn't last long though.
 
#22 ·
Does anybody have any pics of their 12's mounted up on those cyclone 2,15's rims ??? I can't stand the look of 12's on the more narrow rims . IDK , but to me the way the tires sit on more narrow rims , it looks as if they would have way too much flex and you couldn't get the correct feed back from them ?? Somebody correct me if I'm wrong please . :)
 
#23 ·
Kurlon said:
Indoors, cold dusty concrete, any advantage to a rain vs regular tire?
It's one of those things that sounds like it should work. When I was racing pocketbikes I tried a rain tire indoors. It sucked. The rubber was so soft that it grabbed every bit of dust off the floor like a glue trap. Try putting baby powder on the tires you have now if you want a simulation. The guy I sold the bike to had the same opinion.
 
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