Tire pressure campervan

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boland

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#293199 5-Jan-2022 13:56

Just wondering what the tire pressure should be for my Toyota Hi Ace 2015 campervan, with a high top. Manual says 51 psi front, for back it's 51 psi (no 5th seat), 58 psi with 5th seat.
Not sure what the 5th seat means as it's obviously no longer a normal van. There are only 4 seats, but I guess it makes sense to go for 58 psi back due to the added weight.
Tires say 65 psi max, so that's still within range?
So, I thought doing 51 psi front, 58 psi back.

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#2843815 5-Jan-2022 15:15

51 51 or you risk losing control of the back end if too high

Ge0rge

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#2843912 5-Jan-2022 19:42

Batman:
51 51 or you risk losing control of the back end if too high

An interesting theory, and one Toyota seem to be calling you on:

Always go with what the manufacturer for your vehicle says. Weigh your vehicle with you and everything you'd take camping, and check the manual for what "loaded" means weight wise. Then you can make a decision based on proper data. Don't use the data from the picture above either - it's not for your vehicle, only to illustrate that it's perfectly fine to have rear tyres inflated more than the front.

boland

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#2843982 5-Jan-2022 21:08

Thanks. I've tried to locate the tire pressure label, but couldn't find it. Any idea where it is on a Hiace 2015?

lxsw20

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#2843985 5-Jan-2022 21:26

Usually live in the drivers door sil

Handle9

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#2844038 5-Jan-2022 23:42

Ge0rge:
Batman:

51 51 or you risk losing control of the back end if too high

An interesting theory, and one Toyota seem to be calling you on:

Always go with what the manufacturer for your vehicle says. Weigh your vehicle with you and everything you'd take camping, and check the manual for what "loaded" means weight wise. Then you can make a decision based on proper data. Don't use the data from the picture above either - it's not for your vehicle, only to illustrate that it's perfectly fine to have rear tyres inflated more than the front.

Yip. Then drive it and adjust if required. When camping I pump the back of the Pajero up 5-10psi more than the front. It needs the extra pressure to balance the weight in the boot/on the roof rack.

Scott3

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#2844039 5-Jan-2022 23:45

boland:

Just wondering what the tire pressure should be for my Toyota Hi Ace 2015 campervan, with a high top. Manual says 51 psi front, for back it's 51 psi (no 5th seat), 58 psi with 5th seat.
Not sure what the 5th seat means as it's obviously no longer a normal van. There are only 4 seats, but I guess it makes sense to go for 58 psi back due to the added weight.
Tires say 65 psi max, so that's still within range?
So, I thought doing 51 psi front, 58 psi back.

I assume, "5th seat" is talking about some kind of crew van (which may have never been offered in NZ), which was rated for a slightly higher payload over the rear axle than the the "non 5th seat" version, perhaps with stiffer rear supervention.

Given your van would have been gutted for the camper-van conversion, it will be hard to tell what it was.

I think I would make a judgement call of the weight carried by each axle. If more weight seems to be on the front, or it seems even, I would run 51 / 51. But if it seems like a lot more weight is on the rear I would run 51 / 58. Could verify with a weigh bridge if you wanted. But the only van body camper van's I have used (they were ford transit's), seemed really light in the rear.

Batman:

51 51 or you risk losing control of the back end if too high

Nothing wrong with putting more air in the rear if that axle is carrying more weight. Most of the Utes recommended a lot more air in the rear when loaded.

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Batman

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#2844052 6-Jan-2022 06:17

Scott3:

Batman:

51 51 or you risk losing control of the back end if too high

Nothing wrong with putting more air in the rear if that axle is carrying more weight. Most of the Utes recommended a lot more air in the rear when loaded.

correct. i spent a bit of time imagining what he could be carrying while driving that put so much weight over the rear ... and thought he couldn't. He's not carrying 10 adults with their luggage.

would love to see actual axle weights.

otherwise you are driving with more grip in the front and pogo stick in the back.

with 51 51 and heavy rear axle the only thing you lose out on is fuel economy.

traderstu

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#2844057 6-Jan-2022 07:37

Batman:

with 51 51 and heavy rear axle the only thing you lose out on is fuel economy.

And increased wear on the rear tyres with an abnormal wear pattern. Underinflated tyres wear more on the outside shoulders.

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#2844062 6-Jan-2022 08:04

traderstu:
Batman:

with 51 51 and heavy rear axle the only thing you lose out on is fuel economy.

And increased wear on the rear tyres with an abnormal wear pattern. Underinflated tyres wear more on the outside shoulders.

At 51 psi?

Jase2985

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#2844071 6-Jan-2022 08:37

its still underinflated for the type of tire it is and the load its carrying

boland

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#2844088 6-Jan-2022 08:48

Thanks all. I'll do 51 psi front and rear.

I can't find the tire label. PI've checked everywhere.

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#2844102 6-Jan-2022 09:24

Jase2985:

its still underinflated for the type of tire it is and the load its carrying

if you look at the picture someone posted unloaded it's recommended for 38 psi. (or 36 psi)

51 psi is pretty high if you're not carrying 10 adults and their luggage.

in fact it recommends 36 psi for front when loaded

so i'm not sure where OP got 51 psi for front

boland

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#2844104 6-Jan-2022 09:27

Batman:
Jase2985:

its still underinflated for the type of tire it is and the load its carrying

if you look at the picture someone posted unloaded it's recommended for 38 psi. (or 36 psi)

51 psi is pretty high if you're not carrying 10 adults and their luggage.

in fact it recommends 36 psi for front when loaded

so i'm not sure where OP got 51 psi for front

I got 51 psi from the manual.

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#2844105 6-Jan-2022 09:30

ah i didn't realise the poster says the pic is not for your vehicle

i have an 8 seater van that seats 8 + room for everyone's luggage. that weighs 1900kg unloaded. it has 55 profile tyres on it.

i have driven it at 28 psi, 34 psi, 42 psi front & rear. the fuel economy difference is minimal, the tyre wear is very noticable under 40 psi.

i don't run in the 50s as i find it handles better with lower psi but my van is likely smaller than your van.

mine is older and doesn't have vehicle stability control so i value wet handling.

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#2844117 6-Jan-2022 10:11

51psi is probably a Light Truck tyre pressure. 55 profile sounds more like a car tyre.

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