Or you could get the 32-349mm non-folding tyre at £9.99 from SJS like we do... still 115psi but will run higher if you really want. Can't really go wrong at that price (other than in a wet race where you might need a tread...)

You won't need a tread, even in the rain... I'll let the much missed Sheldon Brown explain: http://sheldonbrown.com/gloss_ho-z.html#hydroplaning

I never said I'd hydroplane, but it's sure to reduce contact forces? Hydroplaning is when the tyre and road are completely separated by a thickness of water, but even a small film of water acts as a lubricant. We use use friction modifiers at work to reduce noise, but they have rain sensors attached as a) the rain washes the substance off, and b) the rain does the job anyway!

It's not likely to affect F24 but I would expect F24+ to suffer in the wet?

And as a quick test, it does take longer to stop in the wet when using the rear brake only... Much as Sheldon has good stuff to say, I think this is taken out of context slightly.

We've never used the Brompton wheel/tyre combination before but will be next year on our new car. Is the folding tyre easier to fit than the wired? Being softer I thought it might be. I know they are a pig from what I've read on the blog in the past. Michael J. has shown me a method to help overcome the pinching problem.

CC

It depends what rim you use. We've used the SJS rim at £35 and it's VERY difficult. If we build new wheels this year, I will drop to 28 spokes (from 32) and use the standard Brompton rim - approx £18 and apparently much easier to fit tyres to. A second benefit is that fewer spokes cost less and weigh less. I intend to use very thin transparent plastic to cover the inside of the wheels next year, which should make post-race spoke checks a lot easier, while not affecting aesthetics.

The size/tyre combo is almost perfect, though for packaging I'd rather use 305s but tyre choice becomes the issue.

I agree with you on 305's. Our older car uses them and they are a doddle to change. I managed to get a quantity of the discontinued Kenda Keywest 1.5 inch tyre that are practically slicks on EBay.

The rims we have are the Sunringle ones (Brompton?).

CC

Coyote is running 28H Brompton rims and I can confirm that they're very easy to fit tyres to, no need to resort to tyre levers. We've also done hundreds of laps round a kart track at much higher cornering forces than would be encountered in the majority of Greenpower races and the wheels are still true with no broken or loose spokes,

Just got some foldable Kojak tyres and they are a whole lot easier to fit than the hard wired type. They cost more but worth it to save the high blood pressure inducing effort in trying to fix a puncture! Just thought I pass that on.

CC

Now THAT could be good info. thanks :)