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Author Topic:   Tubes or not?
racinrich1
Dirt Full Roller

Total posts: 46
posted August 29, 2003 06:21 AM  
I am going to a fast 5/8 track with a lot of potholes and ruts next week...Would you guys run tubes if using DOT tires?
Rich

Racer13T
Dirt Full Roller

Total posts: 46
posted August 29, 2003 07:32 AM  
i dont use tubes never had any luck with them.if u got good tires shouldnt need tubes jmo

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 29, 2003 02:15 PM  
nooooooooooooooooo dont do it

doubletrouble
Dirt Forum Racer

Total posts: 82
posted August 29, 2003 02:57 PM  
It better to run tubes when beadlocks are not allowed.It helps with running lower tire pressures also

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 29, 2003 05:37 PM  
I have run tubes in bias ply tires..When I went to radials I thought tubes would build up heat.. On this extra rough track I want to keep the tires on the bead...
To those who say NO...Why not?
Rich

outlawstock17
Dirt Forum Champ
Total posts: 1363
posted August 30, 2003 01:01 PM  
tubes chafe the tires and eventually wear a hole in the tube......even with baby powder. they also add unsprung weight on the front and both unsprung weight and rotating weight on the rear.

rocket36
Dirt Freak

Total posts: 209
posted August 30, 2003 09:28 PM  
no, you shouldn't need tubes.
don't forget that the tire makers know more about tires than any of us ever will.
the tires are designed to run within certain parameters for pressure. if you run less then you will have a problem. if you run low pressures for better traction then you need to fix the traction problem (like different tires or suspension setup).
also make sure the safety beads on the wheels are in good condition.
a tire comes off the bead because it deforms. put a tube inside and it will still deform (the tube is nothing more than a balloon).

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 30, 2003 09:45 PM  
Run em

Elmo
Dirt Forum Racer

Total posts: 79
posted August 31, 2003 02:19 AM  
I would recommend a screw in valve. I once blew out a rubber valve with 21 psi in the RF tire on a rough track. Rough tracks require more psi. The lowest you can go without loosing the tire is as allway's a gamble for speed. If you want to run a tube, do it. I have seen racers do very well without them. I used to allway's run tubes. Now I don't see the need. As stated above, they add weight.

x factor
Dirt Full Roller

Total posts: 34
posted August 31, 2003 07:53 AM  
As long as I am running on street tires without bead locks I will run tubes. I also have had better luck keeping them on the bead and I run my pressures as low as 15#'s on the left and 17#'s on the right.

dirtracer7
Dirt Freak

Total posts: 337
posted August 31, 2003 08:35 AM  
Have had 3 flats this year 2 had tubes and 1 Tubless.Goodyear short track specials.1 tubeless was a puncture,The 2 with tubes had tubes blow , I still put tubes in tire near the end of there days . Still don't know what to think about running tubes.The weight,heat and thinking they will last better I don't know!!!!!!

b4racing
Dirt Forum Champ
Total posts: 626
posted September 03, 2003 01:45 AM  
you need to make sure your wheels have the valve stem located in the right spot or you will pull htem. the reason that tubes are used is you can run lower pressure and if you roll the tire off of the bead then oh well the tube is in there to push it back and never stop. Like said earlier make sure the tube is with the correct tire bias to bias and radial to radial. But just my .02 Bobby

HotDawg
Dirt Newbie

Total posts: 1
posted September 04, 2003 09:48 PM  
I run a hobby stock on a 4/10 mile track with pretty good banking with G-60 American Racers and have not had much luck with tubes ever! I run about 10 1/2 PSI in the left side and 16-18 PSI in the right front and 13-14 PSI in the right rear but we are allowed to run a bead lock. I've been told by some modified drivers that when they run tubes they cut a short piece of hose and put it over the valve stem with a hose clamp to keep the valve stem from getting spun inside the rim. To each their own I don't know that there is a right answer.

33x
Dirt Roller

Total posts: 8
posted September 07, 2003 01:55 PM  
Last night we had two flats. Both on the right side. Front came off in a heat race and the rear come off at the end of our main. We never ran tubes in our heavy chevy (3200# Cutlass) with 12# outside and 10# inside. We figured that the track was not broke in because the late models ended there season last week and did not race last night. The track was very ruff. So were going to install tubes for next week and would like to ask you guy's how much pressure to start with? I'd like to leave offset and weight the same, we run 15X8 rims w/tall dot tires. Thanks for the help and have a safe season!

racer17j
Dirt Forum Champ
Total posts: 5390
posted September 07, 2003 06:02 PM  
won't the tires gain pressure like twice as fast w/tubes you would have to compensate for that. last week our motor blew and we were running double features a friend of ours let our driver in his car for the night he rolled off 4 rr w/beadlocks so for this week the regular driver of the car put in tubes and drove the car pressue in the rr went from 13 to 18.5 in 10 laps usually they gain around 2.5 in 15 laps these are hoosier RC4's

racer17j
Dirt Forum Champ
Total posts: 5390
posted September 08, 2003 09:47 PM  
We will try 15# on the right and 12# on the left with lots of baby powder. Everyone I've talked to local and I have to agree with 17j on not allowing the tires over 18#. We race in Ohio and the nights are getting cooler. Thanks again all!

racer17j
Dirt Forum Champ
Total posts: 5390
posted September 09, 2003 06:56 PM  
I agree with 17J, you run DOT tires that low and the sidewall breaks if it stays on the rim. Also I haven't had heat build up problems with tubes in my DOT tires.

dirtrace54
Dirt Maniac

Total posts: 192
posted September 10, 2003 03:39 PM  
If you do decide to run tubes, if your on radials, make sure that you buy a radial tube. Seen to many people that try running bias tubes in radial tires. Thats creates a large amount of heat. I can tell you the goodyear part number for the difference between bias and radial tubes. I have ran cars with tubes and without. Its a give and take game because both have their advantages and disadvantages. Try 'em for yourself and make a decision. Hope this helps
P.S. The only class that i would run tubes is on something without racing tires allowed.

33x
Dirt Roller

Total posts: 8
posted September 10, 2003 06:07 PM  
I guess I got screwed up in my thinking. I thought by starting out at a lower pressure the tires would heat 2-3 more pounds and be close to 18# with the tubes. I guess I can't get use to running a higher pressure but I'm going to start with 20/18#. The radial tubes in radial tires is a very good idea. Heck, I run with the pack and have fun. Thanks again!

Eljojo
Dirt Forum Champ
Total posts: 968
posted September 14, 2003 09:04 PM  
The right rear got t little nick in the sidewall... I've tried tubes in the right rear before and never had any luck, but I think I'll move the RR up to the RF and put a tube in there. Theyre retreaded F55's...a hard sidewall and I keep it about 20 lbs. I'll let ya'll know how it works out for me.

33x
Dirt Roller

Total posts: 8
posted September 16, 2003 05:23 PM  
Wow, all this time I was running a low tire pressure. With the 20/18# setup I got the old bomber to slid in the turns and keep the RPM up! As far as the tubes, we have two races left so I'll just run them for now. Thanks guy's for all the input! Makes my race car happy too.

bigcitycowboy
Dirt Forum Racer

Total posts: 89
posted September 29, 2003 01:43 AM  
hey 33x, what size tires are u running??

33x
Dirt Roller

Total posts: 8
posted October 02, 2003 07:52 PM  
23560r15

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