| Author | Message | ||
| Ed Brenner (207.226.80.184)
Rating: |
I know its been posted before,but I need to know the revolutions per mile of a 11r/22.5 tire.Need to calibrate new speedo in my 4106(set the proper switches).Thanks | ||
| Mike SS (24.120.111.24)
Rating: N/A |
Try this. http://www.cwis.net/~mallie/page12.html | ||
| RJ Long (24.127.8.58)
Rating: N/A |
Ed - Not all 11Rx22.5s turn the same revs per mile! Check with your tire manufacturer for the specs for YOUR tires. Michelin, Bridgestone and others frequently have that data on their websites, do a little surfing and you might not have to call a dealer. Mallie's site is a good one for getting a "guesstimate", but most accurate will be w/ tire dealer's info. HTH, RJ | ||
| Jack Conrad (207.30.189.67)
Rating: N/A |
Best way to calibrate your speedo is to use a handheld GPS. If you have boating buddies, they may have one. Hope this helps, Jack | ||
| jmaxwell (66.42.93.121) Rating: N/A |
Measure the diameter of your tire(should be between 40.5 and 41.5 inches) From that, using the formula 2x3.1416xr(radius)u will arrive at circumfrence. Divide cir. into 5280; u have revolutions per mile. However, I think u will more likely need a measured mile and the trans & final drive ratio. | ||
| Doug (Toolman) (65.161.50.239)
Rating: N/A |
Ed, To get a true rolling diameter, put a chalk mark on the sidewall of the tire directly below the hub center and place a mark on the pavement to match.(a flat parking lot is a good place for this)With a helper, move the bus forward until the mark again comes around to touch the ground and place another mark on the pavement. Measure the distance between the marks. This method will compensate for over/under inflation and load weights. Just a little info from my old racing days! HTH Toolman | ||
| Jim Stacy (32.101.44.31)
Rating: N/A |
Get a catalog from a fleet equipment supplier that sells hubodometers. These charts show each tire brand, model and size and give TPM's for each. Some real surprises here. Some 22.5's have fewer TPMs than some 24.5s! This info is probably on the web site for the hubodometer co. | ||
| Jayjay (207.30.115.114) Rating: N/A |
Do like Doug says, and chalk the tire, but hang a video camera on the wheel well instead of rolling the wheel, and go for a drive over a measured mile. Play it back slo-mo and count 'em. Might be harder to do than say, and quite a challenge, but it might be fun to do. Cheers...JJ (Hey...do us a favor and let us know the brand and revs when you get it all done, however you do it.Okay?) |
