PSI....Hot

Dec 7, 2014
723
555
Lexington, SC
Name
Dan
Do you ever check you PSI in tires after riding? I don't, but today I went for a little 50 mile jaunt with temps around 99 deg. and noticed my front tire seemed to be taking bumps a little harsher than normal. As I have said, the Cobra tire is a really smooth ride and I keep my PSI at 41. When I got home I decided to check it and was surprised that it was reading 46 PSI. I am going to let it cool down and recheck before adjusting air pressure.

Just wondering if anyone else has had this happen??:cxtv:
 
Do you ever check you PSI in tires after riding? I don't, but today I went for a little 50 mile jaunt with temps around 99 deg. and noticed my front tire seemed to be taking bumps a little harsher than normal. As I have said, the Cobra tire is a really smooth ride and I keep my PSI at 41. When I got home I decided to check it and was surprised that it was reading 46 PSI. I am going to let it cool down and recheck before adjusting air pressure.

Just wondering if anyone else has had this happen??:cxtv:

Normal......... Thats why all manufactures state don't check when hot... Heat expands.
Once they cool down you'll find them back at 41... Less any you might have lost checking them......
 
It's normal for a bike's(operating) tire temperatures to run 10 to 15% over the set cold tire pressures.

In the summer months of South Florida, I will decrease the cold tire pressures by about 1 pound to help compensate for a less harsher ride.
 
The last time I put air in my tires was January. As the temps keep getting hotter it is making up for any seepage. Beginning to wonder just how long I can go. One of these cool mornings soon should be the end of the run.;)
 
OK I checked the PSI in my front tire this afternoon and it was at 42, so it did come down to almost the set point of 41. I decided to drop the pressure to 39 PSI for the rest of the summer to compensate for the heat.

Oddly enough, I checked my rear tires, which I set at 22PSI and they were dead on both hot and cold. Must be tire size or more heat is generated in the front.:confused:
 
I'm still not sold on this whole Nitrogen is better thing since normal breathing air is 78% Nitrogen by volume anyway or thereabouts. So if the nitrogen doesn't expand, then the remaining 22% of the gas causes all the expansion. It doesn't make a ton of sense to me. But then again, I am no rocket scientist. Ride safe
 
I'm still not sold on this whole Nitrogen is better thing since normal breathing air is 78% Nitrogen by volume anyway or thereabouts. So if the nitrogen doesn't expand, then the remaining 22% of the gas causes all the expansion. It doesn't make a ton of sense to me. But then again, I am no rocket scientist. Ride safe

I think it's a little gimmicky. Don't get me wrong, it does have it's merits, but they aren't world changing. A local car dealership tries to add $300 to every car they sell for 'nitro-fill'. I bought a car off them 4 years ago, and it had the little extra side sticker with that and a couple of other invisible items.

I told them to just let the nitrogen out of the tires and fill them with air, then take $300 off the price. I had one confused salesman let me tell you. In the end I still got the nitro fill and didn't pay the extra 300 bucks. It really shocked the manager that I would argue over something so trivial. I asked him to hand me $300 if it was trivial to him. He declined.
 
I think it's a little gimmicky. Don't get me wrong, it does have it's merits, but they aren't world changing. A local car dealership tries to add $300 to every car they sell for 'nitro-fill'. I bought a car off them 4 years ago, and it had the little extra side sticker with that and a couple of other invisible items.

I told them to just let the nitrogen out of the tires and fill them with air, then take $300 off the price. I had one confused salesman let me tell you. In the end I still got the nitro fill and didn't pay the extra 300 bucks. It really shocked the manager that I would argue over something so trivial. I asked him to hand me $300 if it was trivial to him. He declined.

$300...LOL what a racket. Costco use to put Nitro in tires for FREE when you bought and or rotated them.
 
$300...LOL what a racket. Costco use to put Nitro in tires for FREE when you bought and or rotated them.
Yeah, that particular dealership is infamous for it's rackets. On the side sticker (all vehicle there have them), there's another item that says 'window etching'. This is to ID it against theft. That was another thing I told them to remove, and they said they couldn't. It was also another thing I didn't pay for in the end.

It astonishes me that there are so many sheeple out there that don't even ask about that stuff and pay for it.
 

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