What tire pressure should I use, will I get a blowout?

Question

I've got tires on my hybrid which say on the side wall that recommended pressure is 40-65psi. I've pumped them up until they are firm and don't deform while I'm on the bike (I'm 16 st). I checked the pressure today with my cars pressure gauge and they're at 95psi! Is this a blowout waiting to happen and should I get a better tyre/inner tube?

Answer 1

I wouldn't go over the 65 lb max the tires will deform to a certain extent.

Answer 2

depends what kind of cycling your doing. anyway u look at it though u shouldnt bring it above the recomended limit by too much. if ur cyclking on the road u can go abit over the limit but if ur gonna be hoppin off things or goin on a trail you should lower the pressure

Answer 3

skinnier tires -> higher pressure -> rolls easier

if you mostly ride on the road, get some skinnier tires, with no tread, that are rated at at least 90psi

the inner tube has nothing to do with it

Answer 4

5 over during hot weather is ok, 10 during cold weather.

Answer 5

over inflating that much is not a good thing. that is borderline blowing up in your face when you are getting that high. What kind of bike do you ride. I have a fuji that calls for 90psi, so its really all depending on the type of tire you are riding. I can't make a full answer for you, other then don't go more then 5 psi over the recommended, and if you have any other questions take it to a bike shop. I weigh the same as you, its not a weight issue, people larger then us ride bikes at the recommended psi. Get your wheels checked out, and good luck.

Answer 6

While there is some safety margin built into the tire, you should not exceed the maximum pressure the manufacturer has embossed on the side of the tire. I always inflate to the maximum pressure indicated on the tire. Some deformation when you put your weight onto the bike is normal.

My experience is that you do need a better tire that will take more pressure. It will roll easier and ride smoother. Get a tire with at least an 80 psi max. Tubes are usually not an issue. I've never seen one that had a pressure limit.

HTH

Answer 7

You've got good intentions and the right idea.  So don't beat yourself up about my suggestions.

40-65 psi sounds right for a hybrid bike tire (about 1 1/2 to 2" in width).  Don't inflate beyond 65 psi.  I've overdone it and gotten a blowout.  It's not fun.

I'm guessing your bike has Schaeder valve (as opposed to Presta).  While it's tempting to use car air pumps and gauges for your bike, don't.  Car tire equipment is designed for lower pressure and higher volume than bike tires.

You can solve both problems with a good bike pump with a pressure gauge.  I recommend getting one with a flexible hose.

HTH

Answer 8

One thing I would suggest is get a tire gauge for bicycles, or a pump that has a gauge built in. Car gauges are not accurate above 50psi.

Like everyone says, overinflated is a bad thing, while just a little over would be ok.  

Answer 9

Joe Blow - Get a bicycle pump with a gauge built in. Joe Blow is the name brand I recommend as most all bicycle shops have them.  They have duel ends shrieder or pesta.  If you are going to ride mostly on the road then go with the high end of the recommendation at 65, this will put very little resistance between your tire and the road and will allow you to travel more effeciently.  If you go to the lower end your risk more chances of a "pinch" flat.  This is where you hit a bump and the inner tube is pinched which results in a hole in the tire.  If you are doing a lot of slippery road stuff then you may want to lower the pressure toward the low end.  You will have better traction, but again risk more of a pinch flat. Never overinflate your tires, and yes, you will have a blow out and should you be away from home without a spare then that could be trouble.  Now if you are speeding down hil and have a blow out, well you will need medical attention.  You do wear a helmet?

Pay  attention to all safe practices when it comes to cycling, they are dangerous and not the little toys you had as a child.

Answer 10

check  again with another gauge..