Just noticed after buying new octavia 18.TSi SE Plus a few weeks ago the tyre pressures have been set buy the dealer at 34psi or 2.35 bar . This according to the sticker on the fuel flap is suitable for 5 occupents and full luggage load.

As its just the wife and I ,I will reduce to 32 or 2.2 bar which according to skoda is for 2 occupents and luggage.

This may also improve the ride it is a bit firm and crashy over bad roads.

what do other owners run at?

I would leave at that, advice from alias, he should know , he sett mine up on his alignment rig

Thats for a vRS with 182 wheels by the way, what size are yours

205/55 16

bridgestone turanza

Fuel door pressure is just a guideline. You need to find one that will suit you. From Expierience I would say dont go below 32PSI if you dont want ruinyour tyres. With tyres like yours I would leave at what you got and check wear in few k miles. If you need to change it - go 2-3 psi higher or lower and see results. I doubt it you will ever have any problems while riding on 35PSI even with just you as a driver alone.

Yes

As i said I will drop down to 2.2 bar nearer skoda &bridgestone recommended pressure for one or two occupents. this will improve the ride by giving a little more flex in the tyre side walls.

I have the same car. I pump them up because I think the suspension is mushy!

Fuel door pressure is just a guideline. You need to find one that will suit you. From Expierience I would say dont go below 32PSI if you dont want ruinyour tyres. With tyres like yours I would leave at what you got and check wear in few k miles. If you need to change it - go 2-3 psi higher or lower and see results. I doubt it you will ever have any problems while riding on 35PSI even with just you as a driver alone.

What would you recommend for a VRS running with 235/35 19 tyres?

Same car (1.8 TSI) I checked mine and they were at 31 all round... added an extra 2 psi to 33 and it feels a little smoother and I swear my MPG is up slightly!

Thats for a vRS with 182 wheels by the way, what size are yours

Wow...............My Vrs only has 4 wheels, well 5 cos theres one in the boot,

2.2 BAR - the same all round, unless fully loaded (rare) I put the rears up to 2.3 BAR

I'm running at 2.2bar all round.

When I hang pushbikes on the towbar and fill the rear with camping gear, I increase the rears to 3bar, as per the fuel flap. Works OK for me but others have been doubtful.

Thats for a vRS with 182 wheels by the way, what size are yours

Wow...............My Vrs only has 4 wheels, well 5 cos theres one in the boot,

Think Alan missed the 'shift' when hitting the '2' button on the keyboard

I run 32PSI all-round on my 18s, lifting the rears to 34-35PSI if I've a car load and luggage.

What would you recommend for a VRS running with 235/35 19 tyres?

Depend on tyre and current handling but I would look for something between 37 and 42 PSI - maybe higher with really soft rubber. If you have soft tyres and decide to go lower then you risking damaging sidewall or excesive wear on side/sides.

With sizes bigger then 18 you can forget about manufactures recommandations - its useless.

Same car (1.8 TSI) I checked mine and they were at 31 all round... added an extra 2 psi to 33 and it feels a little smoother and I swear my MPG is up slightly!

Im not supprised. Many times drop of 3-5PSI in one tyre will effect mpg. Thats why Ialways stress about tyre condition and tyres pressure. It save you loads of £££ on longer run when you maintain it properly.

Depend on tyre and current handling but I would look for something between 37 and 42 PSI - maybe higher with really soft rubber. If you have soft tyres and decide to go lower then you risking damaging sidewall or excesive wear on side/sides.

With sizes bigger then 18 you can forget about manufactures recommandations - its useless.

Vredestein Ultrac Sessanta Xtra Load. Car is a DSG Hatch. Some online research tends to suggest (for a Astra VXR and Audi RS4) fitted with 235/35 19 that Vredestein recommend mid-40 psi!

Eek! Not entirely sure if i want to admit this, just been out in the rain to check, only checked the 2 offside tyres and they were both 28psi!

Not entirely confident that the old gauge i used was accurate though, will check again tomorrow.

Depend on tyre and current handling but I would look for something between 37 and 42 PSI - maybe higher with really soft rubber. If you have soft tyres and decide to go lower then you risking damaging sidewall or excesive wear on side/sides.

With sizes bigger then 18 you can forget about manufactures recommandations - its useless.

I wouldnt run them that high with cold pressures, as when warm they will be nearer 50psi and very clsoe to the limit of the maximum psi for the tyre. Plus they will be very rounded and you will get more centre tyre wear.

I run mine at 33 psi now and find thats a good balance between handling and comfort. Most tyres nowadays have reinforced tyre walls, so dont need the extra pressure to strengthen the tyre wall.

Vredestein Ultrac Sessanta Xtra Load. Car is a DSG Hatch. Some online research tends to suggest (for a Astra VXR and Audi RS4) fitted with 235/35 19 that Vredestein recommend mid-40 psi!

I have vred sessanta on my vrs and I have the std 2.0 bar and 2.1 bar.

Will have to see what is recommended.

Vred website says: f: 45psi r: 51psi

Doesn't that seem a bit high, bearing in mind skoda recommend 29 and 31?

Edited 11 April, 201214 yr by thewill

I ran my winter tyres at 45 and my current Contis at 43. It is a personal choice. What I can say is that I have no adverse wear whatsoever. Underinflated tyres wear very quickly reduce the fuel efficiency and deteriorate both handling and grip. At extremes, overinflated tyres will wear unevenly but are generally more fuel efficient. Some where inbetween there is a balance of handling vs grip that will suit you.

Interesting, I have inflated mine to vredesteins recommended psi at lunchtime and the ride is harder as expected, what I have notice in the short time is that the car feels a bit more responsive, so we shall see how it goes.

I wouldnt run them that high with cold pressures, as when warm they will be nearer 50psi and very clsoe to the limit of the maximum psi for the tyre. Plus they will be very rounded and you will get more centre tyre wear.

I run mine at 33 psi now and find thats a good balance between handling and comfort. Most tyres nowadays have reinforced tyre walls, so dont need the extra pressure to strengthen the tyre wall.

"You are going right direction but I dont think you know your destination" :p

If tyre like the one we discuss is Temperature A then it will have quite good temperature resistance and will only heats-up so much to raise pressure from 40 to 50 PSI only while racing or driving with speed over 120mph. That create questions?

1. How often do you race with your car?

2. Do you drive lots of miles over speeding over 100mph?

If so then 40PSI will be to high. If you use your 19inch wheels for "blink" then I doubt it you will risk them on English pot-holes. For daily driving even at temperature 30 Celcius deg with speed 70mph you will hardly go over extra 5PSI.

Why ~40PSI? Yes you right sidewall is stronger but edges of tyres are the same. If you will check brand new tyre tread you will find 8mm across ~70% of tread. On edges you will find more like 3-6mm (depend on size and brand). How long do you think will take to wear down part or tyre that has about 50-70% less of tread?

On top of that - 235 vs 215 in size of tyre? With load on tyre it will require different conditions to make tread to touch road across entire rim. This is why its almost impossible to tell what you should run. You need to find your own pressure by "reading tyre". Bigger rims require more pressure - that is why it was ok to use 29PSI on 14inch and 32 on 15ich wheels.

Below 35PSI on 18inch tyres? Bad idea - trust me on that. 42PSI on 19inch? Dont know, better check if it works for you. Play up or down 2-4 PSI and it will make a difference. It will change driving comfort, MPG, steering responce, tyre wear and overall handling. Start somewhere and check it again after 200-500 miles. That is best way.

PS. Do me a favour and can you check TEMPERATURE TREADWEAR & TRACTION of your tyres and load index so it will be easier for me to know what tyre we are dealing with.

37psi in 17" tyres was almost dangerous in my Beemer, 32psi sorted them right out! 1350kg

I have 34psi all round in my Octy VRS, gives just under 50mpg @80mph over 140mile commute (weekend) 1500kg

40+psi in normal road tyres in normal cars? Sounds barking to me...!

ETA: I've just read Continental's Pressure guide - VRS on 18s should be 2.4bar = 35psi

http://www.conti-online.com/generator/www/de/en/continental/automobile/general/download-area/download/luftdrucktabelle_uv.pdf

Edited 11 April, 201214 yr by Jim1556