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Author Topic:   Tubes or no tubes?
MThershey
Dirt Full Roller

Total posts: 36
posted May 03, 2004 08:16 AM  
I'll be running Cooper Cobra GT's and have had people tell me to run tubes and others say no tubes. They're brand new and we usually run between 12 and 18 lbs. of pressure depending on track conditions. Any advice, these suckers are expensive! Oh, they'll be on slightly used steel rims.

Darkside1
Dirt Full Roller

Total posts: 36
posted May 03, 2004 08:34 AM  
Well, I run a different tire.... diamondback retreds, however I don't run tubes. Just use a good bead sealer and your set. I've never lost a tire to anything other than contact with a wall. maybe I'm just lucky (knock on wood)

supwitchew
Dirt Maniac

Total posts: 122
posted May 03, 2004 11:47 AM  
Running pressures that low, especially 12 lbs., I would definately run tubes. They may cause your tire to run a little warmer, but I feel the insurance outweighs it. You may be more likely to survive a cut sidewall for instance. After all, rubbin is racin.

M1
Dirt Freak

Total posts: 257
posted May 03, 2004 04:06 PM  
I dont need to run tubes. I always run the right front above 30psi, and the right rear above 25psi. But I DO use tubes in all 4 corners. I am not going to finish dead last, or not at all because I broke a bead.

But thats just me

joetaylor
Dirt Forum Champ
Total posts: 640
posted May 03, 2004 06:41 PM  
we run tubes when we install the tire we put a hand full of baby power in the tire to help cut heat from the friction

racer17j
Dirt Forum Champ
Total posts: 5390
posted May 03, 2004 08:50 PM  
i run mastercrafts,same as a cooper cobra just a lot cheaper,also uniroyal tiger paws,no tubes.bart wheels.and yes i have broke a bead spinning thru the infield,just don't drive back to the pits on it,and you can blow it right back up.i run between 15 -22 lbs.i have 2 problems with tubes 1.unsprung weight,it takes a lot more hp than you think to spin those 2-3 lbs.2.is heat,while a radial will not grow and throw off your stagger,it will increase in presure
and cause a drastic change in the spring rate of the tire.i would rather change a couple flats during the year,than take the down side that comes with tubes.but thats just me.

o5racer
Dirt Freak

Total posts: 402
posted May 05, 2004 10:09 PM  
Its better to burn em off and loose a few spots than to roll it off the rim and watch from the infield.

te33
Dirt Freak

Total posts: 237
posted May 07, 2004 03:38 PM  
i'd rather take the shot, thats just me.i think there is your answer.speed or insurance,they both win.so pick your style!

bigcityracer
Dirt Freak

Total posts: 431
posted May 07, 2004 10:14 PM  
Personally I will not be running tubes, but here are a couple tricks to use. #1 use about 6 short self tapping screws threw the inside lip of the rim, this will prevent the tire from rotating on the rim. #2 Buy some hose clamp for gas line and clamp the stems so they don't disappear.

STREET16
Dirt Maniac

Total posts: 158
posted May 09, 2004 10:50 AM  
I run tubes because I do a little welding on the inside of the rim - sort of a poormans extreme bead. I finished a feature with a rim that was peeled back so far that you could see and touch the tube, and the damage happened on the parade lap. Bottom line - you need to decide if a little insurance ( not much) is worth the cost.

24s52
Dirt Maniac

Total posts: 122
posted May 10, 2004 07:46 AM  
I will never run tires without tubes again. Even with higher pressures some tires have a soft enough sidewall to peel off even with tubes. The other thing I would suggest (I work for a tire manufacturer) is using the "good black" bead sealer. The guys at the tire store hate it because it makes them really hard to break down, but I've never had one "spin" on the rim. Set up right there is only one thing that will take off your tire...contact. I've even hit the wall sideways at 70 mph and the tires were still good. The rest of the car needed work lol.

ZachmanJ
Dirt Full Roller

Total posts: 38
posted May 10, 2004 10:14 AM  
Had atleast 6 flats last year until we started running tubes. Only had one since due to someones bumper getting into me. I'll never run without a tube again. Lost race last year with 2 to go because of a flat.

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