Replaceing Tube

[tdr70]

Hi
Last week I spun a tyre on the rim and ripped the tube (should check pressures before riding). Just a few quick questions. Does the new tube have a nut on the tube stem on the inside of the rim and one on the outside? What pressure should I run in a 12inch rear and a 14inch front?
Thanks

 

[gooba198]

it should say it on the side of the actual tyre, but mines 35 psi for both aand it same for most mx tread tyres

 

[09crf_149]

35 is heaps on my big bike i run 12 in the front and 14 in the rear so maybe like 16 in the front and 18 in the rear

 

[mattbombers]

depends where your riding, what kinda grounds, and what you wieght...

 

[china boy788]

buy a rim lock??? and run bout 23 on that,

i think thats wat i got and no prblems

 

[Peter1230]

rim lock is a must.. run 18psi in both that will do it fine.. if you worried go 20. not 35 tho haha you will probs blow the tyre out.

 

[aldo]

yer this problem is pretty common on china bikes, the air pressure gets low and it spins off the rim, keep the tyres pumped and a rim lock is the way to go, cost me about 50 bucks to get a new tube fitted and a rim lockput in

 

[sean01]

yeh i run 18psi front and back, but without a rim lock i run about 20/22psi
you can use what ever psi ya want really but dont go below 12psi..
some tyres perform better at different psi levels