Road Tyre Size Advice Please

Slow1

Hi

I am running Conti Ultra Sport 700x23C and am looking at Conti 4 Seasons for the winter. Should I think about a different size tyre? (25 or 28?).

Dont know if relevant but I am 100kgs, have an Ali frame bike and the wheels are AlexRims Race 28.

I want a tyre that inspires confidence on those dubious downhill, negative camber country lanes with odd loose stones/debris!!!

Thanks Very Much!

djdog

Hi,

I've just removed 700x23C Ultras in exchange for Gatorskins and moved upto 25C for the Winter roads.

Feels really well balanced (particually in the in the strong winds) and I'm 90KG so i thought the extra wdith might be a good idea.

Don't think you can go far wrong with the 4 seasons (only reading reviews, not personal experience)

I found the side walls of the Ultras a bit weak, but hey I'm new to this game, someone with more experience will be along shortly....

merak

I'd normally say 25s but at 100kgs, 28 might be better but make sure you have the clearance.

drkawaszelong

not too relevant...however, anything but 20mm, worst decision i've ever made!

actually come to think of it, that's not relevant to this thread at all, oh well!

tarbot18

hi i put 4 seasons a few months back in 25 size and find they far more comfortable than 23 s plus ive gone from a puncture a week to er none , i think ill probably just leave them on as 25 s will be just as fast as 23 s but offer a bit more comfort.

danowat

25's will be fine, even if you are at, shock horror, 100kg :roll:

Slow1

thanks to all......

dabber

If this is for winter just consider clearance in relation to any mudguard you may decide to fit.

Slow1

Any thoughts on grip of Grand Prix 4000 vs 4 seasons.

More concerned about this than puncture resistance.

Cheers

oldhairylegs

The GP4000 is more of a (great) race tyre and doesn't give the same level of puncture resistance - apparently.....

Monty Dog

Save the GP4000s for fair weather, they are not a winter tyre (unless you enjoy repairing punctures?)

Slow1

Went with size 25 Four Seasons. Very stiff, can run lower pressures. Maybe need some use to make them more supple.

racingcondor

4 Seasons are more durable than GP4000S. The only problem they have is the price.

Unlike Monty I seem to get away with GP4000S all year with very few punctures (I'm unhappy if I get more than 3 a year).

Chris87

the latest issue of cycling plus has a really good review all the different winter tyres, might be worth a read

nicktheluddite

does your frame have clearance for 28mm tyres?

keef66

I've been on 25mm 4 seasons for 3 years of year round riding and have only punctured twice; one a thorn like a harpoon, the other a snakebite from a pothole cos I was too lazy to pump them up before going on a night ride.

Initially expensive, but very durable so probably good VFM