Heatwave tyre pressures.

[Milzy]

When I ran them at significantly lower pressures I was getting loads of punctures - upped the pressure and hey-presto! - not one puncture since...

Go and run Tubeless tires then. No punctures low pressure with lots of comfort & speed.

 

[cougie uk]

Thanks Cougie.

I blew up two tyres in a race in Germany and the Conti mechanic basically told me it was too much pressure (and a pothole hidden in a puddle). He swapped the Vredesteins at 120psi for Contis at 90 and I've never looked back since. Great tyres.

 

[Roadrat77]

How much significantly lower? 50%?

Not quite...

 

[fossyant]

Wouldn't worry about it. TBH. 40 years biking, never had a tyre pop due to heat.

If you are a SRAM MTB'er, you've got way more worry of your brakes failing due to heat. There is an issue with a number of their hydraulic brakes that jam in heat. The fix is new revised piston's in the lever. Happened to both brakes on my bike in hot weather. Revised piston cured it.

 

[RoadRider400]

You must have arms of granite to get to 120psi. I struggle to get beyond 100psi with my pump.

 

[vickster]

You must have arms of granite to get to 120psi. I struggle to get beyond 100psi with my pump.

Not a joe blow max by any chance? Those are hopeless for road tyres!

 

[RoadRider400]

Not a joe blow max by any chance? Those are hopeless for road tyres!

A Truflow floor pump of some description possibly in need of replacement. Fortunately I prefer the lower pressures of around 80psi.

 

[Ming the Merciless]

You don’t unless you are already running at the maximum pressures on the sidewalls.

 

[Vapin' Joe]

I did once read something by a guy who'd rode an Etape with Greg Lamond for a few miles in heatwave conditions and the American advised him to reduce his tyre pressures by 10psi because the air would expand in the heat.

 

[Sallar55]

View attachment 656326
My Brommie on a wooden bridge by The Washlands.

I did once read something by a guy who'd rode an Etape with Greg Lamond for a few miles in heatwave conditions and the American advised him to reduce his tyre pressures by 10psi because the air would expand in the heat.

Almost true it was in the pen at the start of an Etape du tour, he told everyone to loose a little pressure from the tyres. It was going to be hot and when you brake hard on Pyrenees descents they can blow. I was in the pen beside him and his son.

 

[Spiderweb]

I used to inflate 23/25 tyres to 100-110 psi, this is old school thinking now, it doesn’t make you faster.
I run my 28mm at 75/80 psi and my 25mm at 80/85psi. A much more comfortable ride👍
I don’t reduce pressure when it’s hot as I’m way below max tyre psi recommendations.

 

[Hover Fly]

When I was cycling in the Alps and summer heat I often found that my tyres had gone from “a bit of give” outside the hotel in the morning to “rock hard+” at the top of a pass. Never had a blow out or any trouble.

 

[bladesman73]

My days 120psi!? Im 94kg and run Pirelli PZero 25mm at 100pis rear and 90psi front. Even considering trying to lower each by 10psi. Suggest you follow suit, it will make a world of difference.

 

[Milzy]

Bladesman is right you know. 100 psi is enough for a 16 stone person. 120 is noob like pressure which will be horrendous on our rough pot holed roads. Complete madness I tell you.

 

[Roadrat77]

Bladesman is right you know. 100 psi is enough for a 16 stone person. 120 is noob like pressure which will be horrendous on our rough pot holed roads. Complete madness I tell you.

Well I'm nowhere near 16st for a kick off and I'm certainly not a "noob" either.