Variation on a question that's been asked a few times.
For reasons, we have signed up to do a charity ride of ~80 miles on our super-cheap Viking Saratoga tandem. I've already made a few upgrades, mainly ergonomic, but was wondering whether I should bother changing the tyres.
I realise conventional wisdom dictates "slicks" rather than "knobblies" for riding a MTB on the road, but the tyres currently fitted are Kenda Kiniptions in 26 X 2.3", which the manufacturer describes as:
Excellent tire for urban assault or skate park use; equally versatile on hardpack race courses
Diamond shaped knob design wraps from bead to bead for sidewall protection and grip from all angles
We run these pumped all the way up to the recommended maximum of 80psi.
Now, I'm all for "marginal gains", but the bike is already pretty heavy, so I'm not sure that lighter weight tyres would make things much easier - I think any potential improvement would be in rolling resistance.
Is there any tire around that would be a useful upgrade in speed? The rims are drilled for Schrader, so if Presta tubes (to allow higher pressure) were part of the solution, I imagine this would require some fiddly adapters.
The rims are unbranded with no markings, so no idea of max pressure.
2 punctures in 50 miles a couple of weeks ago, and I have changed both tyres for Marathon Supremes. This has made an appreciable difference in cruising speed, more than I anticipated.