18inch alloy wheel tire pressure

[FR_SAM]

hi newby here does anyone know what the tire pressure needs to be on 18inch alloy wheels

cheers
sam

 

[warren_cox]

on the Mk1 Leon's they run at 33psi, but I couldn't say on the Mk2. Won't be far off.

 

[DanGB]

35 front 32 rear, normal weight.

 

[mhill]

Have a look on the inside of your fuel cap the info should be on there.

 

[Fishy]

The inside of the fuel lid only has details for 16's.

Fish

 

[S8N]

35 front 32 rear, normal weight.

Sorry to drag up an old thread but are those figures accurate? I did not realise that the fuel cap figures were wrong!

Mine as currently 32/28!

 

[Xe]

I Have my 16" (soon to be 18") at 36/33, I figured that as most of my driving is on the motorway the tyres would be hotter then for normal driving, hence extra pressure to compensate. PLus I think my mpg is also better. Tyres have been on for 1.5 years, with little wear.

Anyone care to comment on my theory... is it bollocks lol?

 

[alx_chung]

My fuel cap says 32/28 and I assume that is for 16"/17" and 18" or am I wrong?
Alex

 

[FRLeon]

hi
i have got the 18"s and the fuel cap says 32 front and 29 Rear so god knows if thats right after reading the rest of the threads

 

[Pummy]

I just follow what is in the fuel cap.

 

[chrisboyle999]

I Have my 16" (soon to be 18") at 36/33, I figured that as most of my driving is on the motorway the tyres would be hotter then for normal driving, hence extra pressure to compensate. PLus I think my mpg is also better. Tyres have been on for 1.5 years, with little wear.

Anyone care to comment on my theory... is it bollocks lol?

greater speed = greater heat = greater pressure. therefore more pressure to start with = even more pressure once the tyres are hotter.

afraid your theory is complete gonads!!

 

[BanziBarn]

I think the figures in my fuel cap are for 17s (my car was second hand and the garage put the 18s on) - they told me the pressure is the same on the 17s to the 18s.

No idea is this is correct though.

 

[Michael B]

Does it not say on the tyres?

 

[BanziBarn]

Think it says a max pressure on the tyres.

 

[johnbev]

Seats don`t really make sense on tyre pressures, if you look at ford/vauxhall (others too probably) in the manual it has lots of variations on pressure depending on tyre/wheel sizes loads too.
But seat only have Load differences irrelevant of wheel/tyre size
Surely the other manufacturers have researched this, why would they bother listing them all

 

[wheelwright]

Spoke to seat service at my local dealers they said just put 32/29 as 17's and 18's are the same pressure.

 

[DanGB]

I recently pumped my tyres to 36/32 as per fuel cap, and you can definatly notice the difference in firmness when it was deflated to about 30/29

 

[john_ach]

I find that the ride is far more crashy when my tire pressures are low (Sport 17s). I can tell when they have dropped below the recommended pressures in the fuel cap by the change in the ride. I tried pumping them up a bit to 38psi instead of 34ish that they were and the ride feels better. Although with the wet weather over the past few days they do lose grip a little earlier and over bumpy bits (as you would expect).

 

[cardaft]

Does it not say on the tyres?

I often see people saying this, this is the max pressure, you should never inflate a tyre anywhere near that pressure

 

[Xe]

greater speed = greater heat = greater pressure. therefore more pressure to start with = even more pressure once the tyres are hotter.

afraid your theory is complete gonads!!

Anyone do track days here? Think you do Dan... anyway do you pump your tyres up a bit for track days?