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Topic: Miss-matched tires (Read 459 times) previous topic - next topic

Miss-matched tires

On our recent trip out west, I picked up a nail in the rear DS outside tire.  Long story short, I ended up having to replace it with a different brand. The service guy measured the existing tires diameter and told me the new tire would be ok...something about tire skip? Anyway, I now have 3 Hankook and a new Goodyear. Is this going to be problematic down the road?

After the cost- $650 +, I would sure like to carry my own spare but have no idea how/where to carry it.
Rick & Deborah Webster
2002 3610 U320 #5964
2014 Jeep Wrangler Sahara JKU- 'Copperhead'
Richland Chambers Lake, East Texas

Re: Miss-matched tires

Reply #1 –
I know it wears both tires out faster from experience but this article explains mismatched tires better than I can.
http://www.truckinginfo.com/article/story/2010/01/mismatched-duals.aspx
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Miss-matched tires

Reply #2 –
Big question is what standards the service guy used to say the mis-match was OK. May have been a considered answer, may have been that he was not going to drive back and shop for another tire.

Best answer is to raise that wheel position off the ground and measure the circumference of each tire. The danger of mis-matched tires is that the taller tire will carry the majority of the load and therefore be way overloaded.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Miss-matched tires

Reply #3 –
He did take the old tire to his shop to measure it. He said it was within 3/32 of the new tire which sounded minor to me, so I let him put it on.
Mike's Tire Shop in Ranger, TX. sent out by GS roadside.
Rick & Deborah Webster
2002 3610 U320 #5964
2014 Jeep Wrangler Sahara JKU- 'Copperhead'
Richland Chambers Lake, East Texas

Re: Miss-matched tires

Reply #4 –
Quote from: Old Hippie –
He did take the old tire to his shop to measure it. He said it was within 3/32 of the new tire which sounded minor to me, so I let him put it on.
Mike's Tire Shop in Ranger, TX. sent out by GS roadside.

If that 3/32" is the difference in circumference, you are in great shape.

Even if that is diameter (i.e. height) you are OK per the article in the link in craneman's post.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Miss-matched tires

Reply #5 –
thanks craneman and Brett....
I am now a little more "tire-smart".
The other thing I figured out was not to try and patch a nail hole in a tire that ran flat at highway speeds. Even if the inside of the tire looks good. The patch held but the sidewall did not. During re-inflation the side wall blew out, embedding sand in my shin.
Rick & Deborah Webster
2002 3610 U320 #5964
2014 Jeep Wrangler Sahara JKU- 'Copperhead'
Richland Chambers Lake, East Texas

Re: Miss-matched tires

Reply #6 –
I put mine in the basement area laying down,you can manhandle it in there and let the tire change guy change it,cheaper than $650.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Miss-matched tires

Reply #7 –
Bought a $50 tire to toss underneath for the inevitable. Blew a tire, and limped to the rest stop and coach-net sent a guy to change it out for me for free. Since then I've aquired two more tire/wheel so I carry a mounted.

Also, I use cross-fire on my rears to keep pressure equal.
1998 U270 34'
 

Re: Miss-matched tires

Reply #8 –
I've seen several RVs with a spare on the top. I always wonder how far that sucker bounces down the road when they roll it off.
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk