Had many problems with these inner tubes looks like a manufacturing fault they split on the inner side after a few hundred km......back to the Kenda tubes.

I've never heard of these inner tubes. here in Chiang Mai we can buy Bontrager which are OK but in the UK I prefer Victoria. Victoria offer real lightweight options. I'm not sure about Kenda.

just spent 30 minutes trying to get a kenda tube in a panaracer 700x23 up in nakhon nayok, took 3 attempts. it looks like where the valve is attached to the tube is just a bit too big & won't easily fit inside the clincher. needed to pump it up a couple of times to get it to finally fit.

I've been using Vittoria Ultralites (sounds like a contraceptive, but no, 700-23 tubes!) - just looked at the packaging and despite the name, and being an Italian company, they are actually manufactured here in Thailand.

Bought a pair of Michelin Speedium 2 tyres recently but don't need to fit them yet - I'm nearly 100km from a cycle shop so pays top keep spares in stock.

Tubes cost me 150, tyres 580.

Dare I risk it? Yes I'll say it - I have been puncture-free since leaving Phuket in April - love these country roads, though a real hill would be a shock!

cheers everyone, and happy cycling.