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Discussion Starter · #1 ·
What is the correct tyre pressures to be using on the RS. I know this label says 41psi and 35psi for the 20” wheels I’ve got but I’ve never in my life ran over 40psi on a car. I’d think the tyres were over inflated and I’d wear them incorrectly rather than a nice overall even wear. What’s you guys/gals thoughts?
I’m currently running approx 34psi all round for two people.
 

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Discussion Starter · #2 ·
Just noticed it should be 36 & 32psi - the bottom set of pressures on the label. So I’m not far off with 34 all round. I’ll adjust them at the weekend.
What’s the difference between 97W & 97Y?
 

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W-rated tyres are rated up to 168mph. Y-rated tyres are rated up to 186mph.
A tyre with a higher speed rating will give better grip and stopping power but may not last as long and may not perform as well in cold weather/winter conditions.
Along with different compounds Y rated tyres are likely to have stiffer sidewalls. This means the tyre pressure can be a little lower than a W rated tyre despite dimensions being the same.
You are right to be cautious as too much over inflation isn't a good thing

 

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😂😂😂 quality gif usage. That's gotta be a sore back..

You'll be letting minor air out as you drive anyway so all round or a little higher should be fine. But also might depends on how many people you have in car generally
 

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I have Y rated (Michelin 4S) 275 30 20" and at 36/32 the car is too sticky & steering feels heavy, whereas at 42/39 it feels too jumpy and light on tight bends at speed, so I have found that 39/36 is ideal (without passengers or luggage) for my B8 3.0 Tdi Cab which is 45 kg lighter than the B8 RS5.
Racks- I wouldn't recommend those ZZ's either as they have inner tubes..
 

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Discussion Starter · #6 ·
I have Y rated (Michelin 4S) 275 30 20" and at 36/32 the car is too sticky & steering feels heavy, whereas at 42/39 it feels too jumpy and light on tight bends at speed, so I have found that 39/36 is ideal (without passengers or luggage) for my B8 3.0 Tdi Cab which is 45 kg lighter than the B8 RS5.
Racks- I wouldn't recommend those ZZ's either as they have inner tubes..
Know exactly what you mean with heavy steering. Will give your recommended pressures a go see if it feels better.
 

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OK, yes- definitely worth a try.
With the heavier steering I referred to that is when it is in 'Comfort mode' as I have ADS - so in 'Dynamic mode' for more spirited driving the steering becomes tighter and feels a bit heavier anyway.
 
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