I work on 30 - 40,000 K's for a set of tyres, so half worn at around 20,000 sounds about right to me. But then don't know what tyres or pressures you have either so can just generalize.
-- Edited by madaboutled on Saturday 28th of March 2015 01:21:13 PM
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Steve, Di & Ziggy We named our Motorhome "Roadworx" because on the road works "On The Road Again" Ford Transit with 302 Windsor V8 conversion, C4 Auto, 9 Inch Ford Diff All Lighting L.E.D., 260 Amp/h AGM, 530 Watt Solar + Kipor Backup Gen.
Going from your information if it is the van tyres I would check for alignment , if it is your coly tyres I would rotate at every 10.000 and Criss cross, if it is the coly the extra weight on the back from the van will cause more wear on the back tyres than the steer,and check all pressures.
Check tyre placard inside your car door or around there? I would raise pressure 10lb from empty ..if tyre wear is in centre ? Pressures are too high ? May pay to check rear brake bias ? I have split thoughts on rotating tyres? Yes they take longer to wear... But replacing two tyres is easier wallet than four.. Plus if there's an ilignment issue ? All your tyres wear!!
-- Edited by Aus-Kiwi on Sunday 29th of March 2015 02:12:31 AM
Rears should be at 40psi with load, I rotate all 5 of my tyres every 10,000 and have 20,000 on my tyres and they look like I should get another 30 to 40,000 out of them. I also check the tyre pressure every two weeks or before we head off if we have been camped for a while including van
Now I am quoting what the fleet officer told me at work, and he said:- "Vehicle manufacturers get their own tyres made for them, cheaper, bulk order etc. These tyres don't have the tread depth on them, compared to the tyres we would replace them with. So don't expect to get the same km's out of them".
Done 40K towing a 3t van. Tyres are worn and by 50K will need replacing. Towing an extra 2t+ will cause more wear on tyres. Most car manufacturer do not put tyres on their vehicles thinking that the vehicle will be pulling an extra 2t or 3t. You'll find a lot of tow-ers will go and buy tyres like Coopers which have much deeper tread and therefore will give you longer life.
Larry
-- Edited by deverall11 on Sunday 29th of March 2015 02:25:12 PM
Rears should be at 40psi with load, I rotate all 5 of my tyres every 10,000 and have 20,000 on my tyres and they look like I should get another 30 to 40,000 out of them. I also check the tyre pressure every two weeks or before we head off if we have been camped for a while including van
I know you are trying to help but general statements such as this are inaccurate. If I had 40psi in rear tyres I would have 2 flats in less than 100km. Our rear axle load is 2 - 2.2 tonnes and so 60 psi is required for cCoopers and Bridgestones we have now .
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Why is it so? Professor Julius Sumner Miller, a profound influence on my life, who explained science to us on TV in the 60's.
My old 21'6" 2.4 ton Jayco with dual axle independent load sharing suspension gets about 80,000km out of a set of cheap Goodyear tyres. Although I'm not certain of that as I have replaced them on two occasions, always with lots of evenly worn tread, based on time ... circa 6 years.
The compliance plate on the van says that the tyres should be inflated to 200 Kpa (29psi) which I have confirmed with Jayco on several occasions. After the first set of tyres I upped this to 40 psi. No noticeable difference to tyre wear but the van rides & tows better, perhaps.
I rotate the tyres at every 10,000K or 6mths when I do my break pad check & wheel bearing check & grease.
ps. I still have the original WBs & seals, and break pads after 200,000km. But then I drive very conservatively & never overloaded (85km/hr & engine breaking on ranges etc).
