"Tyre Pressure Idiot"

Nissbird

Member
Joined
Jul 16, 2015
Messages
200
Location
Hereford
"Tyre Pressure Idiot" that is what I am, let me explain: Up until a recent revelation I have thought my bike's tendency to pull into corners was normal, however when my Range Rover warned of low tyre pressures and I booked it in to the Land Rover garage for a sensor check I suddenly thought I should check my tyre gauge with another, lo and behold it was out by minus 6PSI. So I corrected my car's tyre pressures and the warning disappeared. It then dawned on me that both my Bulldog and Super Tenere might be wrong also, and they were. Now both bikes ride so much better.
 

fac191

Well-Known Member
Joined
Jun 22, 2016
Messages
648
Location
London
"Tyre Pressure Idiot" that is what I am, let me explain: Up until a recent revelation I have thought my bike's tendency to pull into corners was normal, however when my Range Rover warned of low tyre pressures and I booked it in to the Land Rover garage for a sensor check I suddenly thought I should check my tyre gauge with another, lo and behold it was out by minus 6PSI. So I corrected my car's tyre pressures and the warning disappeared. It then dawned on me that both my Bulldog and Super Tenere might be wrong also, and they were. Now both bikes ride so much better.
I have 2 so i can compare both to reference them.
 
Joined
Jun 26, 2019
Messages
64
Location
Manchester UK
I check tyres pressures once a week if commuting, which is under20 miles round trip other than that I check before rideouts using the tyre inflator and Also a pressure gauge. There is a slight discrepancy between the two.
 

Sierra1

Well-Known Member
Joined
Nov 7, 2016
Messages
4,261
Location
DFW-TEXAS
I check them daily with a cheap ass electronic gauge. I've had it so long that I've actually had to replace the battery. It seems accurate since it matches the TPMS numbers in my wife's car. I seem to lose about 1lb (+/-) per week.
 

Eville Rich

Active Member
Joined
Sep 15, 2016
Messages
144
Location
Wisconsin, USA
I've seen a +/- 10 percent across my automotive tire pressure gauges. I'm enough of a weeny that I look for two that are very close and then able to adjust for the third. Not that I use all three, just my standard calibration method. I don't trust any of it.

But tire pressure is also sensitive to temperature, so I only check when they have been sitting overnight and the garage isn't baking hot. Roughly speaking, every 10 degree F change affects tire pressure by 1 psi. And if I drive from Wisconsin into Colorado, I don't stress that my tire pressure is suddenly reading higher. I tend to set my car tire pressures about 3 psi over the spec simply to allow for ambient temperature changes.

But 6 psi is a lot in steady-state conditions. I think I get a new gauge about every year as one always seems to get wonky every few years. The gauges on my pancake air compressor seem to be the worst. And I don't trust the stick style at all unless it's for very low pressure tires like on an ATV or lawn tractor, where 10 percent error doesn't really matter that much in the big picture.

Yes, I'm a tire pressure weeny. Is there a support group?

Eville Rich
2016 S10
 

Jetpowered

New Member
Joined
Jul 22, 2020
Messages
11
Location
NW UK
Until I started using a TPMS I never realised just how much the pressure changes when riding, especially the front tyre, 30Psi when stood over night, 37Psi after 2 hours normal riding on everyday roads, back to 30Psi after being stopped for 60 mins, Tyres are Michelin piolet 5s and only 3 weeks old btw
 

bimota

Well-Known Member
Joined
Dec 10, 2017
Messages
1,351
Location
S Wales UK (Bridgend)

this has been a great bit of kit only paid £48 for mine but looking at the handle bar seing the green bars and 36 psi and 42 psi running all day its a bargain, not even changed the batteries yet over a yr

rob
 

OldRider

Well-Known Member
Vendor
Joined
Jun 7, 2013
Messages
1,672
Location
Western Kentucky
Until I started using a TPMS I never realised just how much the pressure changes when riding, especially the front tyre, 30Psi when stood over night, 37Psi after 2 hours normal riding on everyday roads, back to 30Psi after being stopped for 60 mins, Tyres are Michelin piolet 5s and only 3 weeks old btw
IMO you need to run more air pressure. You're getting more than a 20% change in pressure. I wouldn't want more than a 10% change. I run 40psi in bith tires.
 

Sierra1

Well-Known Member
Joined
Nov 7, 2016
Messages
4,261
Location
DFW-TEXAS
. . . . this has been a great bit of kit only paid £48 for mine but looking at the handle bar seing the green bars and 36 psi and 42 psi running all day its a bargain,
Does your tire pressure not change at all? Cold to hot? I think I read years ago, there's 4lbs difference from cold to hot. Or, are you using nitrogen?
 
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