Revs per mile?
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sytyguy
Moderated User
Re: Revs per mile?
A 5 rev per mile difference will usually work out to be a difference of 3/16" in diameter (depending on actual tire dimensions). You could work this out with tire pressure to obtain near exact revs per mile. Either way, a 5 rev difference is a 0.614% difference (based on 814 revs) and IMHO, that's near-as-makes-no-difference the same. Do eet.
My advice has proven to be unreliable. Caveat Utilitor.
A 5 rev per mile difference will usually work out to be a difference of 3/16" in diameter (depending on actual tire dimensions). You could work this out with tire pressure to obtain near exact revs per mile. Either way, a 5 rev difference is a 0.614% difference (based on 814 revs) and IMHO, that's near-as-makes-no-difference the same. Do eet.
My advice has proven to be unreliable. Caveat Utilitor.
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Re: Revs per mile?
http://www.tirerack.com/tires/tires...ehicleSearch=false&fromCompare1=yes&tab=Specs
Found these. This is close as I can find. Guess these will do.
http://www.tirerack.com/tires/tires...ehicleSearch=false&fromCompare1=yes&tab=Specs
Found these. This is close as I can find. Guess these will do.
Re: Revs per mile?
Hell I guess. Every time I find a low mile Sy the owner changes their mind about selling it...kind of like me. I'm looking for a C6 to satisfy my speed demon until I can build a proper Sy.
Hell I guess. Every time I find a low mile Sy the owner changes their mind about selling it...kind of like me. I'm looking for a C6 to satisfy my speed demon until I can build a proper Sy.
Don W.
Stab it and steer it
Re: Revs per mile?
Won't speak to the previous comments but an answer to your question is that you will probably exceed those numbers just going around corners. Sooo unless you plan on getting stuck in a round-a-bout, not a problem. :lol:
Won't speak to the previous comments but an answer to your question is that you will probably exceed those numbers just going around corners. Sooo unless you plan on getting stuck in a round-a-bout, not a problem. :lol:
alwayscode390
pppssssshhhhhtttttttttttt
Re: Revs per mile?
Glad to hear you are keeping the truck.
I run wheels with a bigger variance , and its been fine for the last 10k miles ... hope this helps
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Glad to hear you are keeping the truck.
I run wheels with a bigger variance , and its been fine for the last 10k miles ... hope this helps
---Re: Revs per mile?
3/16" (or 6/32") is the difference between fresh and worn tires.
For reference, our 2006 Audi A4 specs a 5/32" MAX allowable tire wear difference (front to rear) in the manual. It has a Torsen center diff I think (Not sure EXACTLY what is in ours, but I know some of them had the Torsen, so I assume the spec is written for that model). I'm certain from both an engineering and practical application standpoint that the viscous Coupler in the Sy/Ty usage is more forgivving than a torsen would be, although some additional heat buildup might be a concern in the viscous coupler.....resulting in the need to change the fluid more often.
You'll be fine with a 3 revs/mile difference. If you like I can do the math on how many extra rotations of the VC that is per mile/year/decade/etc
BTW, deleting posts because you're mad or wrong is dumb. If you make a mistake, own it, then make it right. Its the only answer
3/16" (or 6/32") is the difference between fresh and worn tires.
For reference, our 2006 Audi A4 specs a 5/32" MAX allowable tire wear difference (front to rear) in the manual. It has a Torsen center diff I think (Not sure EXACTLY what is in ours, but I know some of them had the Torsen, so I assume the spec is written for that model). I'm certain from both an engineering and practical application standpoint that the viscous Coupler in the Sy/Ty usage is more forgivving than a torsen would be, although some additional heat buildup might be a concern in the viscous coupler.....resulting in the need to change the fluid more often.
You'll be fine with a 3 revs/mile difference. If you like I can do the math on how many extra rotations of the VC that is per mile/year/decade/etc
BTW, deleting posts because you're mad or wrong is dumb. If you make a mistake, own it, then make it right. Its the only answer
Re: Revs per mile?
I was wondering why this came back up. Saving a DaveP rant with decent information and thoughts behind what is otherwise a torturous read.
Anyone know where he got the spec of 320ft-lbs to rotate the Viscous Clutch one revolution? Seems to me most trucks don't make that much power at cruising speeds without boost. Especially in overdrive, with a locked torque converter.
Also, how is the front diff screwed up here? Is he saying that the additional load the transfer case is applying to the front diff is being resisted by the tire size mismatch? Shouldn't that claimed 320ft-lb load be an even split between the two axles, or at least a 60/40 split between the two axles? How was the rest of that truck maintained? How many total miles on that truck? Obviously it was modified to have different tire sizes on it, what else was changed. 10.xx revs difference at the transfer case is still less than 1% BTW, there are just more revs to count there than when measured at the tires.
We haven't even scratched the surface on the myriad of other factors that come into play in determining how fast those components wear.
One anectdotal failure does not a case make. Many anectdotal successes a better (but not complete) case makes, however.
I was wondering why this came back up. Saving a DaveP rant with decent information and thoughts behind what is otherwise a torturous read.
Anyone know where he got the spec of 320ft-lbs to rotate the Viscous Clutch one revolution? Seems to me most trucks don't make that much power at cruising speeds without boost. Especially in overdrive, with a locked torque converter.
Also, how is the front diff screwed up here? Is he saying that the additional load the transfer case is applying to the front diff is being resisted by the tire size mismatch? Shouldn't that claimed 320ft-lb load be an even split between the two axles, or at least a 60/40 split between the two axles? How was the rest of that truck maintained? How many total miles on that truck? Obviously it was modified to have different tire sizes on it, what else was changed. 10.xx revs difference at the transfer case is still less than 1% BTW, there are just more revs to count there than when measured at the tires.
We haven't even scratched the surface on the myriad of other factors that come into play in determining how fast those components wear.
One anectdotal failure does not a case make. Many anectdotal successes a better (but not complete) case makes, however.
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sytyguy
Moderated User
