Smithers MINNEAPOLIS

what about cyclocross?

As I do not race cross it’s totally appropriate that I make this recommendation.

Never more than four atmospheres. If it’s muddy then two and a half atmospheres in the front and three atmospheres in the rear.
What if you have a lot of off-camber but an otherwise fast grassy course?

I run my road tires 95 lbs, wet and dry - kicks the shit out of your atmospheres.

I was sitting in flanders once and joe parkin was there. he walked around to every bike and couldn’t believe how much pressure was in the tires. He kept refering to how few “atmospheres” he used when he was pro. After about the 20th refererence to atmosphere, i wanted to beat him over the head with his fucking “kit”.

What if you have a lot of off-camber but an otherwise fast grassy course?

then you best be doing grass track racing - else skibby will kick your ass if you’re racing some “epic you-know-what”

exactly, it’s what you need after spending time in the euro “peloton”

Smithers, why do you hate American measurement units? My Park pump favors PSI.

My road bike runs in the 105-110psi range. The 700×32 city/commuter bike gets inflated to 90… every other week… so it’s probably closer to 80 right about now. Even that is pretty high for tires of that size, and it figures — they’re basically twice the size of 23s, and almost as much air. Talk about a pain in the ass to inflate.

any questions?

what the f is an atmosphere?

seriously, what psi should i run.

for clinchers, i assume? i don’t have the time for tubulars.

Don’t you guys mean BARs? Mine go to 11!

they’re basically twice the size of 23s, and almost as much air. Talk about a pain in the ass to inflate.

Isn’t the idea behind running tires with higher volume, to run somewhat lower pressure? (lower than that, at least)

otherwise you’re just pushing a lot of extra weight around and losing out on some degree of comfort. a 700×32c tire should be able to comfortably run 60-70psi without danger of pinch flats - and if you want to raise the pressure to reduce rolling resistance to go faster, you’re running the wrong tires…

“psi? I don’t understand these technical terms”
You don’t have to get ‘psi’ about it!!

DO NOT RUN 60-70PSI in your 700×32 tires.. unless you like riding a jackhammer

I roll 35-40 in the tubulars and 40 in the clinchers. And, I’ve never had a pinch-flat at 40psi.

Sickboy, stick to track racing and stop giving advice on cross

http://www.crossniacs.com

atmosphere… psi… wtf? it’s bars… bitches…

jared, if you re-read champs’ comment, there is nothing in there about cyclocross.

Quote:

The 700×32 city/commuter bike

Read it again. Slowly. And a third time.

Can you use Nitrogen in bike tires like on cars? I’ve never tried it, but apparently it is less sensitive to temperature changes when used in high performance car tires.

I use fart gasses.

You’d need a loooong valve stem.

why would you run 60-70 on a commuter tire? all of mine say 80-100.

Well, unless you’re in a hurry - in which case, my point was that if you are, you should consider a narrower tire - inflating large (700×28 or larger) tires results in ride comfort on par with a road tire (read: harsh) but without the privilege of the lighter weight of a road tire.

I run 700×28 Bontrager hardcases when road riding on my winter/commuter bike - and wouldn’t dream of running them higher than 75-80 PSI (more like 65-70psi in most cases, especially if I am training by myself) - the comfort that pressure adds is awesome, and have yet to pinch or puncture flat them after two winters.

a.kruse: it’s possible that 28s would work for me, but I’d prefer a good option at 30 — and none exist AFAIK, much less with a reflective sidewall.

Naturally, the 32s don’t need to be at 90psi, but as often as I do anything but race to get out the door in the morning, this is not their usual pressure, and as far as weight goes with one set of tires or another… weight isn’t a huge deal given the wheelset’s other considerations.

Champs, “a good option” may mean something different to you than to me but Panaracer will have their T-Serv available with a reflective sidewall starting in Feb or March. 700×25, 28, 32, but no 30. Pretty good cornering, rolls well, and great flat protection.

Are you getting some kind of commission on the sale of these tires or something?

If so, he stands to make a few cents. I am a big fan of the Panaracer Urban tires. I have a pair of Urban Max tires to replace the Pasela Club I had. They didn’t have a reflective sidewall or look suspiciously skinny for a 32mm tire like some other choices (Vittoria Randonneur), but it barely cost fifty bucks to get a new pair of tires I could trust based on previous experience, and they weren’t rated for a lowly 75psi.

The panaracer urban may be rated for 95 however I had three tubes blow out when I pumped it up that high. i wouldn’t go higher than 80 otherwise your risking a blowout as well.