Type Pressure 2WD
Submitted: Thursday, Jul 12, 2007 at 11:56
ThreadID:
47648
Views:
2296
Replies:
3
FollowUps:
3
This Thread has been Archived
GeorgieGirl
Could you please tell me what I drop my tyre pressure to in a 2WD towing a Jayco Swan on dirt roads. I have read a post recently but it was only for 4WD.
We hopefully will go down the
Oodnadatta Track from CP to Maree and back onto dirt again through to
Arkaroola.
My normal tyre pressure is 30psi.
GeorgieGirl
Reply By: Member - Troll 81 (QLD) - Thursday, Jul 12, 2007 at 12:15
Thursday, Jul 12, 2007 at 12:15
What car and what type of tyre's do you have? Without knowing any other information about your setup I would guess that 25 should be enough to soften the ride a bit
AnswerID:
252048
Follow Up By: GeorgieGirl - Thursday, Jul 12, 2007 at 12:22
Thursday, Jul 12, 2007 at 12:22
Troll 81
We are driving a Ford S/W and the tyres are Goodyear 215/60R16 95V Eagle NCT 5
On the van I don't know whatever comes stand. It is not an offroad.
GeorgieGirl
FollowupID:
513103
Follow Up By: Axel [ the real one ] - Thursday, Jul 12, 2007 at 15:31
Thursday, Jul 12, 2007 at 15:31
Being a 60 profile you havnt got much sidewall height to play with so all thing being = reverting to the old 4psi rule would more than likely be your best bet , saw and had a yarn to a fellowat the 02
Birdsville races who drove his brand new holden hsv with 18in
wheels and 20 profile tires up the
Birdsville track from Maree non stop ,no tire problems and just his normal pressures of 30 front and 32 rear..
FollowupID:
513133
Reply By: Wayne-o (Pilbara WA) - Thursday, Jul 12, 2007 at 15:14
Thursday, Jul 12, 2007 at 15:14
i wouldnt go lower than 20psi, causr road tyres dont have strong sidewalls, and the constant flex may cause a blowout!
AnswerID:
252064
Follow Up By: Member - Kiwi Kia - Thursday, Jul 12, 2007 at 21:57
Thursday, Jul 12, 2007 at 21:57
Hi Wayne, Radial tyres are designed to flex. It's not so much the constant flex on it's own that causes the blow outs, it's the build up of heat due to 'excessive' flex. As already mentioned try the 4 psi rule. Start off with a cold tyre, note the pressure and drive for about 15 minutes and then check the pressure again. If the presure has gone up by more then 4psi then you have had excessive flexing causing the temperature to rise and over heat the tyre.
FollowupID:
513199
Reply By: Member - Barry M (NSW) - Friday, Jul 13, 2007 at 15:54
Friday, Jul 13, 2007 at 15:54
Towing a caravan & assuming some sort of load in both I would be increasing
pressure above 30 psi, not decreasing it, especially in rear tyres. I am not a
proponent of lowering pressure at all unless in sand or mud, but many will
disagree with that. I only know what works for me. As indicated by others, most
tyre failures, leaving out stakings & stone intrusions, are caused by heat build up
& this is a result of too low a pressure & too high a speed. As a matter of interest,
when I asked the boss at Tyrepower in Alice recently what pressure to run in
BFG A/T on a Jack he said never less than 38 psi, unless in sand, & I agree with
that. Towing a van, I would start at 35 psi & if the tyres still look droopy add
some more......oldbaz
AnswerID:
252228