Just had 4 AVON ZX7 275/45/20 fitted and I can highly recommend these . The difference in ride quality from the 40s to 45s is very noticeable in my opinion 👍

Many have found switching to a 45 instead of 40 profile tyres, gives a more comfortable ride, as well as slightly filling the gap to the bodywork more.  John

RRS MY12 SDV6 HSE. Sumatra Black/Ebony & Walnut + Dynamic Pack, + Cold Climate Pack + Memory Pack, Digital TV/DVD, Premium Leather, Cornering Lights, Cooler/Fridge Box, & most Options.

Good to know about the Avon ZX7's, they are my next boots of choice now I've put the 19's back on. Don't like the fidgety ride of the 20's and to add insult to injury, managed to curb one them last week, so resale value down a couple of quid!
Have you got any pics of the 20's with 45 profiles on? I'm sure they look great, but I'd still be concerned about the extra stresses put on the drivetrain...

Well I've been running 275/45 x20 wheels/tyres for the last 5 years on two different Sports and have not had any drivetrain or suspension issues, for the last 12/15 months I have actually been running 275/45 x 21" SVR wheels/tyres and have had absolutely no problems with them either.

Cheers
Col

Wow, that's extreme! Might go to 55 profile on my 19's then

How do they affect the fuel consumption, as a matter of interest?

I'm running 285 35 22 have been since 2012 covered over 30k miles and nothing untoward to report other than normal wear and tear

Slim444 wrote:

Wow, that's extreme! Might go to 55 profile on my 19's then

How do they affect the fuel consumption, as a matter of interest?

Don't know if it's made any difference to fuel consumption or not as it's a 5.0L S/C and only averages 14/15 mpg anyway.

Cheers
Col

LOL, with that kind of consumption, you may as well go up to monster truck sized wheels, the sort that requires to carry a step ladder in order to get in and out!

I run 255/55/19s on winters and the ride is great, probably due to the extra sidewall  2003 BMW M5 - 5 Litres of V8 Optimax Slurping Goodness in Carbon Black

2013 SDV6 HSE Black Edition- Orkney Grey with Ebony & Ivory. LR Facelift RAI, Genuine G4 Expedition Rack, 4x Warn SBD-160 Spotlights, Warn 9.5XPS Winch, Mantec Underbody Protection and Sump Guard, Full Easy Lift Suspension Module, LR Light Guards, Light Force HTX230 Hybrid spotlights, 18” Compomotive PD1881 on 265/65/18 BF Goodrich KO2, ARB fridge, TuffTrek awning 😎

Hi , I don't have any pics at the moment but if you search there is a guy on here who posted pics of his with same size tyres , looks great 👌