Same tires on different cars/different weights?
Normal air pressure is 28 to 36psi depending on kind of ride wanted. etc.

So 32/34 would seem reasonable.
More than 38psi, NO WAY!!

Want to find out for sure? Talk to your car tech at YOUR car dealer.

 

i droped them down to about 34lbs and light cleared. So u think that 50lbs of pressure will explode a tire? I wonder what tire pressure WOULD burst a tire.
I mount and balance my own motorcycle tires and most say about 36-40lbs for the rears. I have had to put 80lbs into a rear tire once to get the damn thing to seat on the rim. Was sweating it but my bud who once worked at a auto tire place said he has seen times where it would take 100+lbs of pressure to get car tire to seat.
woulda scared the crap outa me.

 

found this

At what point will a truck tire burst from overinflation?
Most new or undamaged medium radial truck tires can withstand three to four times the recommended pressure before bursting. In fact, the rim usually fails before the tire. ITRA has conducted several burst strength tests on new and used medium radial truck tires with special reinforced rims. The tires were pressurized with water. Most recently, three new tires and 13 used tires were "burst tested" with the lowest pressure burst recorded at 300psi and highest at 540psi for an average of 420psi. All of the test tires failed in the bead area.
am guessing this maybe a semi tire but don't know

 

so with your logic, car tire = motorcycle tire?

all your ?s have been answered.. if your bud that worked at a tire shop why did you not as him where to set the tires?

you fail... please take the time to read the owners manual. lots of cool stuff in there..

beers

 

now truck tire = car tire. you fail again..

btw, the two piece rims on the trucks are what fails..

you find stuff like this, google owners manual. rx8.. copy and paste.

beers

 

why don't you drink another beer. or maybe u have already had too many.
It was said that 50lbs might burst the tire.. Who said anything about motorcycle tires and car tires being the same?
here is more info about tires and bursting.

http://seattlepi.nwsource.com/wheels/334159_talk05.html

 

ah,

the beer angle. i dont drink beer.. i have a link or two for you as you seem good to search..

owners manual

and here, tire info

beers

 

ummm....i wasnt serious about the exploding and killing people. just making a point. i actually doubt it would bust at 50 psi, but you really shouldnt use that much pressure.

 

Of course the same tire can be mounted on different cars. Again, there is a range of pressure, determined by the tire's manufacturer, that is safe to operate any specific tire at. Just because they print the limit of that range on the sidewall does not mean that's what you should use. Within that range, there is an optimal pressure FOR EACH VEHICLE that is generally the same for all tires of the same size and performance category. The vehicle's manufacturer will determine that pressure based on their tailored needs.

There is one specific pressure that generally works best overall for a particular vehicle. The manufacturer of the vehicle will determine what that pressure is. For the RX-8, it's 32 psi. For a 350Z it may be 35 psi. "Design pressure" for any particular vehicle is generic and independent of the tire. It is determined through testing by the vehicle's manufacturer. It has nothing to do with the exact tire you have. Set your pressure within the range specified in the owner's manual. Do not set the pressure to the maximum listed on the tire.

Here's an analogy: a specific fan belt may have a yeild strength of 600 lbf, determined by the belt's manufacturer. Ford may then test mulitple belts and determine that they generally have the longest life on Ford's specific engine when tensioned to 200 lbf. But below 400 lbf the belts may squeal. And above 500 lbf, the belts may cause the pulley to deform. Ford may then specify a tension of 410lbf... Then some idiot will read the side of the belt and install it at 600 lbf.

 

OK. I understand your argument. I will talk in your terms. Like you said "XYZ" brand of tire can go in any car.

So who should dictate the tire pressure ?
The car manufacturers do depending on the weight of the car and other parameters.

So now what do the tire manufacturers do ?
They tell you what is the max and min psi that can be put in the tire safely. Bcos they have no way of guessing which car(with whatever weight) will use it?

 

dude - and im serious not flaming but really serious- that scares me. you dont have a basic understanding of tire pressures and you are mounting and balancing your bike tires? thats really scary.

as for your questions about one tire model being used on different cars. the manufacturer states the type and size of tire that should be used on the car and then states the pressure the tires meeting that spec should be run with. just as they do with oil- they state what spec oil you should use for temp range.

this particular tire is used as OEM on MANY cars. the typical pressure recommended by the oems is 32-34 for this RE040.

never run a tire on your car at max or min pressure.

 

http://www.trustmymechanic.com/tire_pressure.html

read that and notice that at no time does it say to use the max press. rating of the tire

 

and this

http://72.14.205.104/search?q=cache:...lnk&cd=3&gl=us

http://www.nhtsa.dot.gov/cars/rules/.../brochure.html

 

 

How does that scare You? U don't know me and most likely will never meet me.
I do know that it takes a hell of a lot of pressure to burst a tire and as long as i stay under the max stated pressure on THE TIRE i would be ok. Yeah it would make for a rough ride and yes the scensor would stay on but i do believe that the tire would not burst as has been stated before at 50lbs.
Was asked before about my truck, and the tire recomendation sticker inside the gas cap area says 60lbs and 70lbs. As it was something i seen quite often those #s just was in my head when i check the truck tire pressures. I didn't have my owners manual handy when i got the scensor light on the mazda so i just looked on the side of the tire.
I have mounted and balanced maybe 25 tires on my bikes since getting the equipment to do so with zero problems over the last several years. I ride about 20K miles a year on my bikes and again have had only one blow out and that was over 20 yrs ago.
I have made maybe 2 dozen passes down the dragstrip and also with no problems
There are alot of things i don't understand and that is why i asked questions.

Some people would rather just critizise than answer a question. Maybe that makes them great in their own little world. Good for them. I will still continue to read the threads on this Rx-forum as there are alot of usefull info here and appreciate thos that have contributed to it but i will damn sure refrain from asking any questions.
later all and stay safe
Michael

 

asking ?s is good. fighting the correct answer gets you to where you are now..

food for the mind.

gfl!

beers

 

this is where we started off down the negative comments path.
becasue i have 2 bikes i should know about how tires are made.

I can see that with you there is no point in continuing this argument. you win. You are the one and only OZ. Or was it The one and all knowing Oz. Can't remember since i have slept since then.
differant subject.
Is it cold up there yet? been still hotter n hell down here but it is finally getting in the mid 80s this past week. the mornings have been getting down in the lower 60s last few so makes for great bike riding weather.
Be glad when winter gets here so can have some decent riding weather.
later
Michael
later
Michael

 

wow,

how many beers have you had..

you have two bikes. you should know how important air pressure is.. i know when my bikes tires are off by 2lbs... life or death...

that is the point, as to me being the know it all. nope. i learn something new here and everywhere everyday...

as to up there, you seem to be working on the seach thing.. i am south of you.. your location is just nw of houston, correct? i spend time in corpus. that is the same latitude as where i live.. btw. tx rocks!!

my post about asking ?s and the answers covers it..

i am glad you have it figured out..

beers

 

Maybe this thread is a little to intense to ask a straightforward question...but it's a web forum so why not.

What does the sidewall of a motorcycle tire say? Car tires say "maximum pressure..." and the meaning of that has been discussed. Bicycle tires say "Inflate to..." so you actually do fill them to the number on the sidewall. I forget what heavy truck tires say, but I have a vague recollection that there's a by the tire spec rather than a by the vehicle spec.

So what does a motorcycle tire say? And do motorcycles have tire pressure stickers like cars do? If stickered, where is the sticker?

Ken

 

Train, I understand the frustration but what everyone is trying to point out is that tires are made to fit on a variety of vehicles. The max pressure on the tire does not mean that it is recommended to run at that pressure. The auto manufacturers evaluate the vehicle and various types of tires that work best for their design. They then but an OEM (in our case the Bridgestones or Dunlops) that they select to best match the handling and safety characteristics of the vehicle design.

The manufacturers also give a recommended tire pressure that allows for safety (too low heats up and can cause failure and/or excess wear around the tire edge, too high can cause the tire to wear in the middle of the tread and or fail due to pressure rise due to the tire warming during use). Yes the same tire may be used on another vehicle with a different recommended pressure but this is because of different vehicle characteristics such as its weight and total carrying weight with passengers etc.

Bottom line is the owners manual and the sticker in the door jamb give you the recommended presssure to run for safety, handling, and wear it is a balancing act of the three.

I also ride, my BMW pressures actually are stated for different pressures for solo, two-up, and high speed riding. Not quite the same as a car but the bike is more sensitive to weight overall because it is so much lighter to begin with.

Trust us, but you can also contact Tire Rack to discuss tire pressures and look at their tech documents. Don't run max pressure it can be dangerous, wear your tires faster and more suceptible to blow outs and rim damage if you hit something.