Pista CS tubs are decent. They do not feel like clinchers. Evo CS's are great, but expensive and not durable.
I have CS's on my training and race wheels, never had a thing to complain about - outdoor or in. They also stretch well and go on the rim without much complaint.
If you are buying your son race wheels, the PX wheels are hard to beat - don't buy him £60 tyres though, he will go through them quickly if he is riding at Welwyn.
Cheers Dan and UniversalDav - all ordered now, I know it's cheap(er) carbon and not the finest tubs but it's within budget and will be a big improvement over his clincher set-up.
Pista CS tubs are decent. They do not feel like clinchers. Evo CS's are great, but expensive and not durable.
I have CS's on my training and race wheels, never had a thing to complain about - outdoor or in. They also stretch well and go on the rim without much complaint.
If you are buying your son race wheels, the PX wheels are hard to beat - don't buy him £60 tyres though, he will go through them quickly if he is riding at Welwyn.