Do SM tires have inner tubes or are they tubeless?

[herbalist]

I need to know ASAP.

Thank you.

[DAVID THOMPSON]

if your bike has spoke wheels like bikes from the old days
tubes are required
there is a bmw model with spokes to the outside of the rim edge that will do tubless

if it is one with alloy rims look at the valve stem where you put air in tire
if it has a nut holding it in it is tube if stem is like car stem it is tubless

be carefull some alloy rims need tubes my 1995 MZ SAXON TOUR has alloy wheels but needs tubes

[jbthumper]

SM got tubes?? = Yes.

[herbalist]

thanks guys,

Had a flat tire this morning.
Took it to the garage pumped it up to 26psi, the thing went down to 18.5 in less than a minute.
After further inspection it looks like the leak is coming from the valve.
(nothing sticking out of the tire)

I have since picked up a vavle key and some gel that you put in the tires to protect against puntures.
The guy in the shop asked if I had spokes on the wheel.
(because the gel only works with inner tubes.)
Then sold me the gel (which included a vavle key.)

So unless you have a reason, tomorrow Im gonna tighten the "valve core."
If that stops the leak. (i.e. no faulty vavle core)
Im gonna put the gel in the tires and job done.

[DAVID THOMPSON]

if i remember you just converted from bicycles to motor cycles

the tires changes the same way there just harder to break from the rim
and work with... i am inclined to see what is leaking and if its the tube
replace it ....but doo check tire for what caused the leak it may still be in the tire
take a flash lamp and look inside for nails or other stuff

if the old tube is patchable do so and keep as a road spair for that day
you go flat and there are no shops open to buy one

parts book lists rear size as rear as 120/80-18
front 90/90-21 front thats for sx model

i am not a fan of the fix a flat spray cans

[herbalist]

Looks like a faulty vavle core.

Gonna go to a shop and get them to replace it.



And youre right about the gel stuff, no good for the rims.

I wont be using that.

[Drew]

Valve cores are cheap, and easy to replace yourself. A valve core tool will set you back ~$3, and is a wonderful addition to the toolbox. Most likely the shop didn't tighten the core all the way; it happened to me once coming from the shop on my sportbike.