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Old 12-04-2014, 08:46 AM   #15
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I have Hankooks heavy loads on my 64 deville convert a huge difference from the other set. Much better ride.
I currently have f's on the rears of the MH / Bridgestone's Happy with them. Plan on replacing them all with Hankooks.
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Old 12-04-2014, 10:53 AM   #16
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I'm passing on the Michelins. I found quite a bit of bad info about their 12ply/F tires having sidewall cracking and blowouts.
If I had a 28-30' MH, I'd be fine with 12ply/F on the rears, but the 34' is a bit heavier so I'm waiting for a set of 14ply/G tires. I'm in no hurry, so if I don't find a good, nearly new used set in the next few months I'll just go new.
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Old 12-05-2014, 10:38 AM   #17
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I thought of an 'issue'. My speedometer is less accurate than it was before the tire change. Now about 7mph at 65 mph (GPS). I don't consider that much of an issue (re: problem) but can imagine some folks would not like it. I may get around to re-calibrating at some point.
I also notice a slight difference in speedometer readings. When I am doing 60 per the speedo I'm actually dong about 57 per some of those speed devises. I'm ok with it as it keeps me in my 55-60 happy zone for optimum mileage.
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Old 12-05-2014, 11:07 AM   #18
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I also notice a slight difference in speedometer readings. When I am doing 60 per the speedo I'm actually dong about 57 per some of those speed devises. I'm ok with it as it keeps me in my 55-60 happy zone for optimum mileage.
If your speedometer is off by 6-9%, then your odometer is also off by the same amount. Will you honestly be able to sign the mileage statement on your title when you sell?? A speedometer shop can probably correct your meters for the new tire size.
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Old 12-05-2014, 10:35 PM   #19
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If your speedometer is off by 6-9%, then your odometer is also off by the same amount. Will you honestly be able to sign the mileage statement on your title when you sell?? A speedometer shop can probably correct your meters for the new tire size.
I don't know about where you live, but in Colorado, if the vehicle is over 10yrs old, or the odometer shows 100K+ miles, the odometer reading is considered beyond its mechanical limits and deemed not accurate or reportable. If I remember correctly, the newly issued title will show 000000 for the mileage.
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Old 12-09-2014, 09:31 PM   #20
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Just curious, but what is the upside to converting to the metric size when 8R19.5's are available?

I found myself in this dilemma last year - except the previous owner of my MH had already changed to metrics. I don't recall whether they were 225 or higher, but I did have 2 blowouts due to rubbing rears. I did a lot of research on this site and most advised me to return to the chassis manufacturer's original recommendation. I did go back to 8R19.5 and have no regrets.

I seem to remember there was a rim/bead issue as well, but I'm no expert and may be wrong.
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Old 12-10-2014, 07:05 PM   #21
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I need to replace the tires on my '89 Gulf Stream Classic 37', and was lucky enough to find some nice used ones for a really good price. I think they are the 225's also, and the current ones are the 8R's, so I'll be making the same change. I'll attach a picture of my rear tires so you can see why I might need to replace them before planning any long trips
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Old 12-10-2014, 07:16 PM   #22
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I might need to replace them before planning any long trips
I dunno... those look like they have a LITTLE life left in them!!

To a previous question; when I purchased tires, the options were very limited with the 8R's - thus my reason for changing.
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Old 12-17-2014, 08:13 PM   #23
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Mid-80s RV with 225/75-19.5

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if your speedometer is off by 6-9%, then your odometer is also off by the same amount. Will you honestly be able to sign the mileage statement on your title when you sell?? A speedometer shop can probably correct your meters for the new tire size.

Eek
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Old 12-22-2014, 04:55 PM   #24
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Hey Wild Irish
Are those tires retreads?

Has anyone had good luck running retreads on the rear of a 24' class c? 6 new tires is going to be a big chunk of cash especially since I'm only going less than 500 miles in a year.
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Old 12-22-2014, 05:10 PM   #25
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Retreads are fine for trucks that go through tires quickly. The fact that you only plan on 500 miles a year means your tires will sit more than the run. RVs typically have more issues with old tires rather than wearing them out. A retread could already be a few years into it's lifespan and will age out. You have to decide what your RV and those that ride in it are worth.
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Old 12-30-2014, 02:11 PM   #26
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shoot I only have 16"

darn, mine are only 16" wheels, can I switch to bigger ones
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Old 01-16-2015, 05:34 PM   #27
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Think I messed up

Well, I finally got the new (used) tires, pulled all the wheels off one side of my old Gulf Stream, then thought to compare them. The old wheels and tires off the rear, when laying flat on the shop floor, one on top of the other are about 3" lower than the two newer tires just stacked together next to them :-( The new ones are 245/70 R19.5's, and the old ones are the original 8R 19.5's. I don't think I could space the rear wheels far enough apart to make up for the huge difference in width, could I? If it is possible to space them, what do you use for a spacer? I have looked for wider wheels, but with no success, except new ones for well over $200! Previous forum entries have suggested that the switch works, but I just can't see how it could, so please correct me if I'm wrong, and tell me what the magic cure is. Thank you all for any knowledge you can lay on me.
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Old 01-16-2015, 05:37 PM   #28
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No,Grog, they're not retreads, but just old, brittle, and coming apart at the cord! Scary, huh?
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