TIMEYES Posted May 4, 2016 Report Share Posted May 4, 2016 Hi all. I have a issue that I'm hoping the wealth of experience / knowledge out there can help me with. During my usual pre-trip inspection I've noticed a possible defect in the tread of one tire. We have GeoStar 255 / 70 R 22.5 H four-groove tires on the front of our Class A. Between grooves three and four some of the one inch chevron shaped tread blocks are distorted - some slightly depressed and some slightly raised (I'm thinking possibly caused by impact on a damaged section of freeway). The tread blocks between grooves one / and two / three are undamaged as far as I can see. My inclination is to replace the tire but at $300 or so, a part of me is thinking if I'm being over cautious. Any thoughts / recommendations would be appreciated. Many thanks. Tim & Eileen 1999 Holiday Rambler Endeavor DP 37CDS 1994 Jeep Wrangler S / YJ Life's too short so what are we waiting for. Link to comment Share on other sites More sharing options...
Yarome Posted May 4, 2016 Report Share Posted May 4, 2016 In order to see firsthand, a photo would certainly help, but it doesn't "sound" like replacement is warranted if you're talking about individual tread blocks within the pattern. If you are talking about an "area" of distortion then that could be a whole different ball game. Link to comment Share on other sites More sharing options...
dartmouth01 Posted May 4, 2016 Report Share Posted May 4, 2016 Sounds like cupping from wear, but would be hard to tell without images. Is it occuring towards the inside of the tire? Link to comment Share on other sites More sharing options...
Retiredin1993 Posted May 4, 2016 Report Share Posted May 4, 2016 Take it to a reputable tire shop and let them evaluate it. They might want to break it down to look inside. This would be cheaper than a new tire. If you ignore it and it blows out you will be out more than just a $300.00 tire. Play on the safety side when it comes to tires. RonUS Army retired2010 Tiffin Phaeton 40QTH2016 Ford F150 XLT Link to comment Share on other sites More sharing options...
Yarome Posted May 4, 2016 Report Share Posted May 4, 2016 Take it to a reputable tire shop and let them evaluate it. They might want to break it down to look inside. This would be cheaper than a new tire. Solid advice. X2 Link to comment Share on other sites More sharing options...
Kirk W Posted May 4, 2016 Report Share Posted May 4, 2016 Take it to a reputable tire shop and let them evaluate it. They might want to break it down to look inside. This would be cheaper than a new tire. If you ignore it and it blows out you will be out more than just a $300.00 tire. Play on the safety side when it comes to tires. My reaction exactly! How much are you willing to risk? Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
Ray,IN Posted May 5, 2016 Report Share Posted May 5, 2016 Take it to a reputable tire shop and let them evaluate it. They might want to break it down to look inside. This would be cheaper than a new tire. If you ignore it and it blows out you will be out more than just a $300.00 tire. Play on the safety side when it comes to tires. I agree. Sounds like alignment or steering components is the cause. 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
rdickinson Posted May 5, 2016 Report Share Posted May 5, 2016 I agree but you will probably wind up replacing both. Link to comment Share on other sites More sharing options...
wildmandmc Posted May 5, 2016 Report Share Posted May 5, 2016 i would check tire presure first, if under, then good chance cupping is good reason why, if tire presure is good, then alignment an new tire should be done. 2000 Itasca Horizon DP (Got Total During Irma). Vice President of Charlotte County Defenders LE MC http://charlotte.defenderslemc.com/ Link to comment Share on other sites More sharing options...
I'mdonewiththis forum Posted May 5, 2016 Report Share Posted May 5, 2016 Maybe this will help? http://www.michelintruck.com/assets/pdf/Truck_Tire_Service_Manual_062011.pdf There is even a section for RVs. Link to comment Share on other sites More sharing options...
phillyg Posted May 5, 2016 Report Share Posted May 5, 2016 Yeah, I agree with having the tire checked out. We're just throwing out WAGs without photos, and even if there were photos it might be difficult to determine the problem. My first thought was a partial tread separation based on your description, yet three other posters came up with other possibilities. Link to comment Share on other sites More sharing options...
Ronbo Posted May 5, 2016 Report Share Posted May 5, 2016 Good link for the service manual http://www.michelintruck.com/assets/pdf/Truck_Tire_Service_Manual_2011.pdf Ron C. 2013 Dynamax Trilogy 3850 D3 2000 Kenworth T2000 Optimus Prime Link to comment Share on other sites More sharing options...
TIMEYES Posted May 5, 2016 Author Report Share Posted May 5, 2016 Thanks everyone for your input thus far and apologies for not replying sooner but just managed to get a half decent photo which hopefully shows the issue. This 'anomaly' is repeated three / four times around the tire but only on one line of the tread - the other two tread lines and the inner & outer rims are blemish free . The tire pressures are fine and, on the most recent trip (after which I discovered this issue), the tire temperature matched the opposite front tire (if that would give any indication of a problem or not). Anyway, I've booked into a local tire shop tomorrow so hopefully they will be able to identify the likely cause and, if appropriate, fit a replacement. Cheers Tim & Eileen 1999 Holiday Rambler Endeavor DP 37CDS 1994 Jeep Wrangler S / YJ Life's too short so what are we waiting for. Link to comment Share on other sites More sharing options...
TIMEYES Posted May 6, 2016 Author Report Share Posted May 6, 2016 UPDATE Issue, or rather, non-issue resolved. The tire shop's assessment is that it's only mild cupping and within what would be expected on a four-year old tire. Sorry if I've wasted anyone's time but thank you all for your guidance. Cheers Tim Tim & Eileen 1999 Holiday Rambler Endeavor DP 37CDS 1994 Jeep Wrangler S / YJ Life's too short so what are we waiting for. Link to comment Share on other sites More sharing options...
dartmouth01 Posted May 7, 2016 Report Share Posted May 7, 2016 Did they rotate the tires for you? I have a VW Jetta that has a bit of positive camber, and the insides of the tires wear faster than the outside. I didn't know this until I wore out my last set of tires, and I've decided to get them dismounted and rotate the tires so the more worn side is on the outside, halfway through their life. I'm wondering if it is worth doing this on a trailer, so as to extend the life of the tire? Link to comment Share on other sites More sharing options...
lenp Posted May 7, 2016 Report Share Posted May 7, 2016 I am certainly no tire expert but any cupping is not good. I would strongly suggest a front end alignment. Lenp USN Retired 2002 Winnebago Ultimate Freedom 2012 F150 4x4 2018 Lincoln MKX 2019 HD Ultra Limited Link to comment Share on other sites More sharing options...
Yarome Posted May 7, 2016 Report Share Posted May 7, 2016 UPDATE Issue, or rather, non-issue resolved. Sorry if I've wasted anyone's time but thank you all for your guidance. Great to hear, and not a bit of a waste of anyone's time. Hearing about what may constitute a non-issue for someone in the same boat is just as important as a "hard" fix, IMO. Appreciate the follow-up! Link to comment Share on other sites More sharing options...
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