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-   -   tire size and mds (http://www.ramforumz.com/showthread.php?t=94599)

NDRyder 10-18-2011 08:55 PM

tire size and mds
 
Can anyone tell me if changing the tire size from the stock 275-60-20 to say a 275-65-20 will screw up my mds and not make it work? I had a tire salesman tell me that and not sure if that is correct. Thanks.

Upstater 10-18-2011 09:04 PM

Quote:

Originally Posted by NDRyder (Post 638624)
Can anyone tell me if changing the tire size from the stock 275-60-20 to say a 275-65-20 will screw up my mds and not make it work? I had a tire salesman tell me that and not sure if that is correct. Thanks.

I can't see how changing tire size has any affect on MDS, I think the guy is feeding you a line. I went from 33's to 35's on my truck and the MDS could've cared less...

Rayne 10-19-2011 05:35 PM

If the tire is larger and heavier wouldnt the engine have to work harder to turn it thus making MDS less likely to come on?

SeattlePete 10-19-2011 06:27 PM

MDS is a factor of engine load. Besides that, the tire guy has gotta stop sniffing his glue:

275/60R20= diameter of 33" x circumference of 103.6"
275/65R20= diameter of 34.1" x circumference of 107"

About a 3% difference.

Wonder why you want to go with a shorter sidewall......in any case, you'll be fine. Find another tire store to deal with.

nYmPhMoBiLe08 10-19-2011 07:41 PM

Ya that guy is a moron! It wont turn it off but if you went to a huge tire like at least a 37 then it would be less likely to come on bc of the engine load. I have 33.5 inch tires and mine comes on all the time and drives me crazy bc i have a cutout and the sound it makes on 4 cylinders sounds crappy. But most people get a programmer to turn off the MDS and thats my future plan.

NDRyder 10-20-2011 11:51 AM

Thanks for all the info guys...


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