Changing 28 to 25 sized tyres on commuter hybrid

[barongreenback]

Hi and apologies for another topic on an old theme - I tried searching but couldn't find an answer.

I decided to change the tyres on my Specialized Sirrus Sport for something a bit more puncture resistant (went with Specialized Armadillos as the Marathon Plus are apparently very difficult to fit on the Sirrus rims). The shop didn't have the 700c 28 that I usually use but had 25 and said they would be absolutely fine. Was I advised badly? I realise that it's going to be a bit more bumpy but will the difference be uncomfortable on a 10 mile commute (all on road).

All advice gratefully received. Thanks.

 

[Cyclist33]

I shouldn't panic... I switched from 25s to 23s on my flat bar roadie after 6 months on the 25s, more speedy but no less comfy over a 12 mile road route.

Stu

 

[ianrauk]

25's will be fine for your commute.
I ride 23's (Armadillo's) through bumpy old SE London and they are fine.

 

[barongreenback]

Thanks both. Sadly I dont think I'll be any faster until I lose some lard! Now just to fit them...

 

[ianrauk]

Armadillos are usually quite easy to fit over the rims. Can fit and take off without levers. Just takes a little practice.

 

[ian turner]

Given there wasn't a rush you should have bought them elsewhere

 

[Hicky]

I bought my sirius with 32 armadillos on and switched to 23 gatorskins.
There wasnt too much of a differance, however I did have the wheels changed also to RS10's. What differance that made I dont know!

Didnt need tyre levers fitting the gatorskins.

 

[RedBike]

a

Hi and apologies for another topic on an old theme - I tried searching but couldn't find an answer.

I decided to change the tyres on my Specialized Sirrus Sport for something a bit more puncture resistant (went with Specialized Armadillos as the Marathon Plus are apparently very difficult to fit on the Sirrus rims). The shop didn't have the 700c 28 that I usually use but had 25 and said they would be absolutely fine. Was I advised badly? I realise that it's going to be a bit more bumpy but will the difference be uncomfortable on a 10 mile commute (all on road).

All advice gratefully received. Thanks.

I've just bought a second-hand bike with 700x28 Specialized Armadillo tyres. - So far i've been given no reason to doubt that the tyres are highly puncture resistant, and they do seem to provide a reasonably comfortable ride and have plenty of grip. The only trouble is boy are they HEAVY.

Unless you're carrying a lot of luggage for a road commute I would have thought you'd be much better off with the 23/25mm versions. Save a bit of weight and increase your speed.

If the rides too uncomortable you can always run the tyres at a slightly lower pressure?

 

[barongreenback]

Not so worried about tyre weight when I'm carrying 18 stone! Hopefully I will be soon...

 

[Banjo]

Not so worried about tyre weight when I'm carrying 18 stone! Hopefully I will be soon...

Lighter tyres make a bigger difference than you would imagine.

On my commuter hybrid I use heavy Michelin Pilots in winter and much lighter Bontrager Race lights in summer.Main reason is The michelins have extreme puncture protection when I ride over glass etc that I didnt notice in the dark,

When I fit the summer tyres it feels like a new bike or a much fitter rider is turning the crank for me Adding the same weight in the panniers wouldnt make any noticeable difference but on the tyres is very noticeable.

 

[jimboalee]

If its any comfort ( excuse the pun ), my BSA 20 runs on Raleigh Record 20 x 1 3/8" standard canvas and rubber tread.

I haven't had a P* in over a year, about six hundred miles.

I inflate them overpressure 70 psi vs 65 psi, and ride in the inside tyre track where its cleaner.

 

[barongreenback]

Finally tried them today and they were great, no issues at all and the ride didn't appear to be that much harsher.