Hi just checking on the inner tube size for the rear tyre on my DT 125 R . the old one I took out was a CST 3.25/3.50-18 tube and the new one from Yamaha is a Bridgestone 4.10-18 tube .

The tyre fitted is a Mithchelin Enduro 140-80-18 tyre.

Asking because new tubes valve seems to stick through more as when tyou tighten the 2 nuts up there is visible rubber showing, not right i am thinking.

Cheers.

Whew " thats a big up-grade .  4.00x18  or 120x18 , is a squeeze on them rims,, do you have security bolts [ stops tyre slipping on rim ,]

 

Edited October 11, 20159 yr by blackhat250

Hi Blackhat 

No Rim Locks as difficult for me to get on island but would like to fit ,but the bike came with tyres that size, what size tyres and tubes do you fit

I  FIT  perelli MT43  4.00x 18. on rear , and Maxis 275x21  ON FRONT. 

Do you use the Pirellis on tarmac at all ,I hear there great off road but scuff up quick on tarmac ?

there ok ,  good grip .  if its longevity  your after, Heinendue   [ german ] make are out standing were life,  these are trial block pattern ,

I wouldn't use  real trial tyres[ soft compound ]  they move below you, =scarey