Hi, I am looking to improve ride comfort on road in a 2011 SC. I thought about moving to a 235 55 r20 tire (same diameter as OEM) or 255 55 r20, but some people just had rubber issues. Anyone could please recommend a tire that will fit without mods? I ws thinkin 235/255 55 r20. Another option is to reduce psi. What would be the best psi? Any other ideas? thanks in advance

I’m amazed that you think the ride comfort isn’t good.
What tyres do you have on the car just now? Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey

235/55/20 is a smaller diameter remember the profile, 55, is a percentage of the tread width, 235.
In this case you are reducing the over diameter by almost an inch 2005 E60 M5
2017 L405 5.0 AB
2024 i7 xDrive60
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2006 (MY07) L322 4.2 S/C, 2004 L322 4.4 Vogue, 2002 L322 4.4 HSE, 2006 (MY07) L322 S/C , 2001 P38 Vogue, 1999 P38 4.6 HSE.

alanm_3 wrote:

I’m amazed that you think the ride comfort isn’t good.
What tyres do you have on the car just now?

quavey wrote:

235/55/20 is a smaller diameter remember the profile, 55, is a percentage of the tread width, 235.
In this case you are reducing the over diameter by almost an inch

How old are the existing tires? They degrade so slowly you don't realise how good a new set can feel until you slap them on. This might be as much a problem as tyre size.

I have the Vogue SE 2010 TDV8 and my last two sets have been Michelin Latitude Sport 3 255/50 R20, okay not the SC, but the ride comfort has been excellent, grip superb esp in the wet and I get good wear (I rotate front-back every 3-5K miles), so much better than the Conti boots that were on when I got her.

Now looking to get a set of good winter boots as we live high up and this past Feb we were snowed in for 5 days, the road tyres just no good in -12oC and dry or compacted snow. FF MY2010 3.6 tdV8 VogueSE

john, one option to improve comfort is to reduce the tyre pressures slightly by a couple of psi...

Hi Lester, they are from Nov 2016, they have 22,000 miles, thx

stan wrote:

john, one option to improve comfort is to reduce the tyre pressures slightly by a couple of psi...

I bought a set of 255/55 20 Michelin Diamris Sport for my previous L322.

Improved the ride no end and absolutely no downsides and not even a thought of rubbing even at access height.

There are many threads on this virtually all positive, the only downside is that I like the look of Pirelli Scorpions but I spend far more time inside driving than outside looking at the tread blocks! 2016 (L405) Autobiography in Black with Ivory - for ULEZ
2014 (L405) VSE in Black with Ivory
2011 (L322) VSE in Black with Ivory
2005 (3.2 V6) Porsche Cayenne in Black with Savanna
1999 (P38) VSE in Burgundy (?) with Sand

I think most people go for the L405 size which is 255 55 20 as they have a larger side wall hence improving comfort.

There is absolutely nothing wrong with the ride comfort of an L322 running the correct tyres at the correct pressures  2021 L405 Vogue SE 4.4 V8 DIESEL ~ #17