OMG. Dropped pressures to 44 and 42 and it's like a different ride. No pop top squeak, no cringing everytime you run over a small rut in the road, significant reduction in road noise. Why, of why were my tyres over inflated in the first place.
20” Tyre Pressure
- Thread starter BognorMotors
- Start date
That’s still quit high for 20’s. Most people run 38 or 40. Check that you don’t start to get excessive wear in the centre of the tyre over time.
Camping next week so will drop it further. Thinking of taking the 20s off all together anyway. Brushed the curb and ended up with irreparable sidewall damage on a new tyre. Expensive mistake I will not repeat.
Think the originals were over 50psi because someone assumed tyres were Commercial rated.
Think the originals were over 50psi because someone assumed tyres were Commercial rated.
Keep the 20’s, stop hitting the kerb.
That pic you put up looks like it could just be you’ve ripped off the thick lip of rubber which is only there to protect the rim. I’ve done that in the past on the car and glued it back with rubber glue.
Obviously, not recommended if you’ve cut into the actual sidewall itself.
That pic you put up looks like it could just be you’ve ripped off the thick lip of rubber which is only there to protect the rim. I’ve done that in the past on the car and glued it back with rubber glue.
Obviously, not recommended if you’ve cut into the actual sidewall itself.
tedscaravelle19
New Member
hi, I am also struggling to find the correct tyre pressures on a 20s. I have a T6,1 camper conversion (rock n roll bed, kitchen, pop top etc so fairly heavy even on its own) . it is lowered on B14s. Does running 40psi for commuting sound ok? Please could someone assist me with the correct pressures when the van is loaded say with 4 people, luggage and a couple of bikes. thanking you in advance.
Just to report back, for me, with a light van (estimated <2100kg) running the budget 275 35’s the van came with on 20’s @ 36psi has made no negative impact to fuel consumption, has increased comfort a small amount and seems to have perhaps improved grip. I will continue to run @36psi.
I’m running 245/45/20 on a T30 will 36-38psi be ok?
Yes
I was running 36psi on 255/40 a
101Y eagle F1 and was getting a lot of road rumble and jarring when hitting imperfections so upped it to 40 psi and the extra air made it better. My theory is 101 rated tyres may need more pressure than 103 rated I guess.weight of van etc…. So many variables……
101Y eagle F1 and was getting a lot of road rumble and jarring when hitting imperfections so upped it to 40 psi and the extra air made it better. My theory is 101 rated tyres may need more pressure than 103 rated I guess.weight of van etc…. So many variables……
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40 all round on my cc2 20's, 'cos it's easy to remember and feels good. 42 when all the gear is in feels right at that.
i think i could do 40 and NOT notice the difference on my 20s
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18s should be somewhere between the commercial 50 and 40s for 20s
I’m running 20’s with Michelin Pilot Sport 4S 275/35 at 38-40 psi.
Wear is more on the outer of the tyre but still got 3-6mm left after 29,000 miles. Van has full conversion, so approximately 300kg load weight.
Not cheap tyres but I’ve run 4S’s on other vehicles and got good mileage from them. Therefore I’ve put them on my van to test them.
Wear is more on the outer of the tyre but still got 3-6mm left after 29,000 miles. Van has full conversion, so approximately 300kg load weight.
Not cheap tyres but I’ve run 4S’s on other vehicles and got good mileage from them. Therefore I’ve put them on my van to test them.
brooky_agb
New Member
When mine (275/35 r20) are at 40psi they looks flat. I just can't get my head around this.
They look right at 47psi. How on earth can people be on 36psi?! Has anyone got a photo of what their tyre looks like at 36 or 40 psi?
They look right at 47psi. How on earth can people be on 36psi?! Has anyone got a photo of what their tyre looks like at 36 or 40 psi?
Hi, very late to the post. Would you run 36psi on 255/55/R20 @BognorMotors
Cheers.
Cheers.
The fronts (275/35/20) look slightly flat on the front at 40psi.
When you look from above the wheel there is a slight bulge at the bottom.
I’ll take some pictures.
Do you mean 255/35?
I would try between 36-42 for that size. If what I’ve said size wise above is correct. We run 255/35 on our demo on air and that’s at 42.
47 is far too high and you will get premature wear on the centre of the tyres. We’ve been running between 36-40 psi on 265/40 and 275/35 20 for many years all of our customers with zeros issues. We did a lot of mileage testing to get the pressure right.
Hi, yes my mistake 255/35.
Thank you
