Tyre Pressure on Wranglers???

Submitted: Friday, Mar 21, 2003 at 17:59
ThreadID: 3979 Views:2003 Replies:7 FollowUps:5
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Any advice on the tyre pressure for Goodyear Wranglers. I purchased a new Jack with Wranglers as standard and was told by the dealer that 30lb/ was the correct pressure. Nice and comfortable to drive but at 10k I noticed a bit of wearing. Went to my local Bridgestone dealer and he told me to run them at 38 rear/ 36 front ( seems to be what I read on this site ). That was 18months ago and I just noticed that the front tyres are just about rooted, and have only done 28k. They are wearing badly on the outside and are showing wear in the middle. At this rate I would'nt expect to get 40k out of them. The car get's a wheel allingment at very service.I get sick of reading that someone got 80k out of these because I know I wont!!. What do you reckon?
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Reply By: Member - Bruce and Anne - Friday, Mar 21, 2003 at 18:17

Friday, Mar 21, 2003 at 18:17
Hi Nobby, Iam running Wrangler AT/R's on my Isuzu MU they have done about 20,000 at 32 front 35 rear when I remember to check them (just had to go out and see what was in them actually) and I cannot see any noticable wear. The people who sold them to me had 36 to 38 in them but I found her a little ruff. All the best, Bruce
AnswerID: 15802

Reply By: Kev. - Friday, Mar 21, 2003 at 18:34

Friday, Mar 21, 2003 at 18:34
How big are your tyres ?

I doubt its the air pressure causing the trouble.
Im told most vehicals are set up for o/s driving and here in oz we have a different camber angles on our roads that can lead to extra wear on tyres.
Apparently the small standard size tyres dont show it that much only the larger tyres.

This can be fixed but may be expensive !

Kev.
AnswerID: 15805

Follow Up By: Kev. - Friday, Mar 21, 2003 at 18:36

Friday, Mar 21, 2003 at 18:36
Also rotating your tyres regular can help as i think its only one wheel thats affected. (I had this problem on my Hilux)
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FollowupID: 9632

Reply By: Member - Cocka - Friday, Mar 21, 2003 at 18:51

Friday, Mar 21, 2003 at 18:51
Nobby, don't know which Wrangs you are talking about but go to post 3911 there was discussion there the other day. Try a general archival search also.
AnswerID: 15806

Reply By: Savvas - Saturday, Mar 22, 2003 at 07:40

Saturday, Mar 22, 2003 at 07:40
Nobby,

I'm guessing you are talking about the standard Wrangler AP's on the Jackaroo. The factory specified pressures are 31psi/210kpa in the front and 35psi/240kpa in the back. I had BFG A/T's installed when the car was new and settled on 36 front and rear.

Get a wheel alignment done by someone who is capable of aligning a 4WD or truck. A lot of Holden dealers aren't setup for this. For me, Bob Jane's at Blakehurst fixed alignment problems I'd been experiencing for the first 40000km's, that my dealer couldn't fix. Best $44 I'd spent. If I had this done much earlier, the BFG's would have easily gone to 80,000km instead of 58,000km.

As it turned out, I wore out the shoulders on all 4 tyres because I religiously rotated them every 5000km.

AnswerID: 15833

Reply By: Redjack - Saturday, Mar 22, 2003 at 08:36

Saturday, Mar 22, 2003 at 08:36
Nobby,
Sounds like you've got a serious alignment problem. What does the car track like? Mine's neutral, very slight drift to the left if the roads heavily cambered. My '99 V6 has still got 2 of the original AP Wranglers on it. They did 40 000km on the front and are now on the back at 86 000km. Should get another10 000km out of them. Only had one wheel alignment at 40 000km. The original fronts wore slightly more on the inside. I run them at 32 psi front, 34 rear when lightly laden. Replaced 2 of the AP Wranglers with Michelin Synchrones and very happy with them - quiet, good road grip and good grip on fire track type roads.
AnswerID: 15836

Reply By: Member - NOBBY - Saturday, Mar 22, 2003 at 09:44

Saturday, Mar 22, 2003 at 09:44
Sorry to all.. perhapse I did'nt give enough info. The tyres are Wrangler AP 245/70R16 which is what was on the car when new. I get a wheel allingment every 15k by my local Bridgstone dealer who has all the right gear and does it while I watch. The wearing on the front has him stumped to.I have it booked in today for another allingment. He said that they naturally go out of allingment just by driving, but I've only done 28k and most of that on black or sand. The front tyres are the only ones wearing. The tyres apparently get rotated every service ( although looking at them I am begining to have doubts). I suppose I will box on until they are bald and then go through the minefield of selecting a new brand.( obviously sooner than I anticipted).. Thanks for the responses..
AnswerID: 15837

Follow Up By: diamond - Saturday, Mar 22, 2003 at 18:33

Saturday, Mar 22, 2003 at 18:33
ive been doing wheel alignmentsnow for about 15 yrs the problem with wheel alignments is most people who do them is (a)they have no idea what there doing as they work in tyre shops and get shown the basics as happens in most well known tyre stores or(b)they turn the comper wheel aligner on and if the little green lights say its in specs it should be right.sounds a little like the bloke your using as you say you watch him.first thing a good wheel aligner should do is look at the way the tyres are wearing if there is something odd they should have the know how to figure out what is causing it .is it toeing in to much is it toeing out to much.we have 1 wheel aligner at work and thats all i do there are places in town that do 20-25 wheel alignments a day i will not let them book in mor3e than 8 sure we could do more but to do it properly you have to spent time.next time your getting an alignment just suus out how long hes been doing them for and how many they do a day.also wheel alignments dont go out just from driving and ive never had to realign a vehicle every 15000 ks i i was there would have to be something im doing wrong now im not patting my own back here its just i do it most of the day and i do enjoy it. most people doing wheel alignments hate it.must be something wrong with me lol. i could go on for ages but i wont hope this is some help
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FollowupID: 9674

Reply By: jaycee - Saturday, Mar 22, 2003 at 18:09

Saturday, Mar 22, 2003 at 18:09
Get rid of them. The Zook v6 that my lady uses also had Wranglers when we bought it and thet to are about knackered and have only done 35,000kms. I now run Dunlop Adventurers on my Surf. Got 83,000 kms out of the last set so i'll run the same brand on the zook!
AnswerID: 15871

Follow Up By: Member - NOBBY - Saturday, Mar 22, 2003 at 19:01

Saturday, Mar 22, 2003 at 19:01
Thanks for that. I have just had them re-aligned and balanced, and they were both out. The same guy did them that did them 15k ago and he said that it was normal for them to be out by so much(2deg.).He assures me that it will happen again and I should have them checked next service.I guess I will just have to add $60 onto the service bill for a balance, allingment and rotation. I read with intrest Diamonds response but unfortunately he doesn't live in the Sunshine State, or it would be a get to know basis. Thanks again.
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FollowupID: 9675

Follow Up By: diamond - Saturday, Mar 22, 2003 at 19:41

Saturday, Mar 22, 2003 at 19:41
this respose is for nobby im not sure what he meens bye its normal to be out by 2deg thats crap if your car is out 2deg every time hes doiung a wheel alignment hes got no idea sorry.after your last wheel alignment you should have a print out of the specs camber/caster/total toe let me know where there scrubbing inside or out side and the measurements and ill let you know where i would set them and just tell the guy to set them aty the specs i tell you. now its a late model jack isnt it.and $60 bit rich we charge $45 for wheel alignment/rotation&balance maybe we should be asking more lol and i always get the customer to come back after 2000ks for a quick look at wear and if its needs a little adjustment i will do it no charge
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FollowupID: 9676

Follow Up By: Kev. - Sunday, Mar 23, 2003 at 19:30

Sunday, Mar 23, 2003 at 19:30
2 deg out is a lot !
I agree with diamond ,
If this guy was "stumped" by the wear on your tyres go else were . (maybe a truck wheel aligner instead of a tyre shop)
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FollowupID: 9723

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