Have bought my new Vredestein 235 / 65-17 Ultrac Satin and wonder what air pressure I should have in them. Vredestein support says 2.8 bar and the sign in the car says 2.2 bar. What do you recommend?

I run my tyres, Goodyear's in the same size as yours at 36 psi or approx 2.5 bar in your case. Landrover - turning owners into mechanics since 1948

2014 Orkney grey Freelander SD4 GS.
2004 Zambezi silver Discovery 2 Td5 (Gone)
1963 Surf blue Morris Mini Minor Super de Luxe (my little toy)

2.2 bar is LR recommendation. 2.8 bar (40psi) seems too high to me

Bob 10MY (Sept 09) TD4 HSE Auto in Stornoway Grey (Now Gone)

08 FL2 TD4 SE Manual in Rimini Red (Now Gone)

With all my cars, for normal everyday driving, I've gone by the 'door' recommendation - wouldn't have thought it varied from one brand of tyre to another?
Just run under 1000 mile on weeks holiday at LR recommended pressure of 2.2 and car felt fine. Returned 38mpg

Questions about tyre pressures come up on car forums all the time. The car manufacturer recommends a pressure for normal conditions (2.2 bar in the case of the FL2). Why vary from that? Significantly higher or lower pressures are likely to result in uneven tyre wear.

However, in everyday driving at everyday speeds in normal road conditions, I believe that it would take an exceptionally talented driver to be able to notice any difference in the car's behaviour if the pressures were + or - 0.2 bar or less, providing all four tyres are set at the same pressure. Currently enjoying:
2011 Freelander 2 TD4 XS (SOLD)
2013 BMW X3 20D M-Sport Auto
2007 Jaguar XK 4.2 Coupe

As I spend a lot of time up and down the M4 I tend to keep the tyres at 36 psi. Lower than that and the outer edges of the tyres wear more than the centre and the fuel economy goes down.

Having raced and tracked various vehicles I can tell if my tyres aren't on the money. You can also hear them.

36 psi would be too high for playing in the mud when you really want them nice and spongy.

Always set mine at 32psi regardless of which tyre brand fitted, always had even tread wear except for NSF shoulder outer edge.

32psi or 2.2 bar. It’s always the same. Doesn’t matter what make of tyre, or tread pattern. Loaded vehicle or traveling light. Towing or not. Off road or on road (except for soft sand). It’s always the same.

It works. And if it works, why fix it?

There was a bit on the BBC this morning about the new MOT. Interesting that low tyre pressure is one of the reasons for failing the new MOT, presumably it will be just a visual check. I can't see them measuring the actual pressures.
Also comments about the number of people who have bought diesel cars without knowing that the DPF has been removed so are in for a big shock. 3 x FL1 2 manual + 1 auto
5 x FL2 4 manual + 1 auto
Now Discovery Sport P250 MHEV SE

Strangely, my wife's Astra has two recommended tyre pressures. "normal" and "Eco". "Eco" is (from memory) about 8 lbs higher. presumably gives less rolling resistance. Ex AA Series III LWB Safari - Gone
300TDi Disco (bought new - terrible car) sent back after 18 months
Freelander 1 Estate - leased, given back at end of lease
200TDi Disco (bought from a mate with 100,000 on the clock) - Gone
Disco 2 TD5 - sold and exported to France
FR2 TD4 GS - Gone
FR2 SD4 HSE - Now changed for a DS
New model ex-demo Evoque S 180 in white
Unable to order a new DS, so gave up. Now have a Volvo S90 Recharge.

Get a tyre pyrometer and go for a spirited drive and check for constant temps across the tread and alter accordingly?

Maybe a bit keen for the road though

Alternatively, measure your depth at 3 places across the tread run for say 3 months at LR recommended, then check for even wear.

Spagley wrote:

Get a tyre pyrometer and go for a spirited drive and check for constant temps across the tread and alter accordingly?

Maybe a bit keen for the road though

Not at all Spagley - if your tyres are even temp across the tread they are happy tyres. My posh Fluke meter has a lazer infra red temp sensor thingy and I used it to get my kit car's pressures just right.

When I collected my FL2 from my seller, I was puzzled by the harsh ride (not much but noticeable) and found that the tyres were set to 38psi. When I set them to 33 psi everything improved a little including less tyre roar - even SWMBO noticed the next day  Cheers,
Raz
FL1 TD4 GS Auto 2001 Silver
FL2 TD4 Auto 2007 Black
FL2 XS SD4 Auto 2012 Fuji White

Just did 400 km on corrugated roads, 25 PSI which ends up at 30 PSI once they have warmed up.

34 PSI on the sealled roads, which ends up at about 39 PSI once warmed up.

The side facing the sun can be 2 to 3 PSI higher than the shadow side after driving 30 minutes with the sun on the side of the car. Procrastination, mankind's greatest labour saving device!

Acoustic insulation ARB TPMS 3xARB air compressors After cooler Air tank On-board OCD pressure air/water cleaning Additional 50L fuel Carpet in doors ABE 2x1kg Waeco 28L modified fridge Battery 4x26ah Solar 120w Victron MPPT 100/20 DC-DC 18amps 175amp jumper plug Awning 6x255/60R18

Last edited by Lightwater on 28th Jun 2018 3:54 pm. Edited 1 time in total

TPMS

Click image to enlarge

To reopen an old topic with a slightly different question. I was doing the tyre pressures today (yes I know I meant to check weekly but I don't) and I was curious as to why the FL2 has the same tyre pressures all around (same as my previous XC Volvo's) but the DS has lower tyre pressures at the rear? Does anyone know why this is and whether it has an effect on tyre wear?

Hopefully the photo's show up below...

Edited to insert photo's