am I right In saying that there will be no issues with using 275/45/20 instead of 275/40/20 tyres thanks

I use 275 45 20 and no issues here  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 😎

+1 no problems. 2008 G4 RRSport TDV8 current
2009 TDCi 90 current
2018 Discovery 5 HSE lux current
1994 Dakar current

+2 Have run that size on two Sports over last five years absolutely no issues. No significant variation in speedo reading either.

Cheers
Col

+3 I have 275/45/20's, the speedo is within 1 km/h compared to GPS indications. Much better ride and better presence. Regards etc.,

Wojtek

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WAS: 2006 RRS Supercharged
IS: 2010 RRS TDV8 HSE

Last edited by TheWojtek on Wed Oct 07 2015 7:01pm. Edited 1 time in total

I work for Pirelli tyres in carlisle there's no issues with changing the sidewall size at all

Just to point out, they do all have to be the same size. (Merely stating this as a precaution )  Visiting from DISCO3.CO.UK
2006 Discovery 3 TDV6 Auto HSE Zambezi Silver

Tried to buy Michelin CrossClimates in 275/45/20 to replace my 275/40/20 because the CrossClimates are not available in 40. Michelin wouldn’t approve it under any circumstances, so tyre fitter wouldn’t sell them to me. Even Camskil would not approve.

If you want a slightly more comfortable ride, you can also go for 255/55R20  --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport Supercharged V8 HSE Dynamic



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

Rolo wrote:

Tried to buy Michelin CrossClimates in 275/45/20 to replace my 275/40/20 because the CrossClimates are not available in 40. Michelin wouldn’t approve it under any circumstances, so tyre fitter wouldn’t sell them to me. Even Camskil would not approve.

They are your wheels, its up to you what you do with them  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 😎

As MICHELIN only recommends using the original tyre size that was given by the car manufacturers, therefore we cannot ask for approval from Land Rover.

If you wish to experiment outside these standards, we advise you to consult with your manufacturer or your local garagist.

MICHELIN is happy to accompany you on every journey and would like to thank you for your confidence.

Kind regards,Dora
MICHELIN Customer Care

3 tyre suppliers wouldn’t sell 45s to me. One said that if I turned up with tyres without wheels in order to fit as a separate transaction, the mechanics would spot the difference and check and then not install.

To overcome the issue I’ve bought a mint set of 255/50/19 original wheels with good tyres for £499 and £26 for National to install them, plus £50 in fuel to clollect. As most know, there’s a wider range of tyres available for this size and tyres cost substantially less, like £80 each tyre.

Not sure whether to sell the original 275 wheels, or keep them to fit if I ever sell the Range Rover Sport on. Alternatively, I could fit winter tyres if I decide to do a trip to Scandinavia.

Last edited by Rolo on Sat Aug 04 2018 3:56pm. Edited 1 time in total

The MICHELIN Latitude Sport 3 is a summer tyre model, as you also mentioned, and summer tyres were designed to be used when the daily temperature is above 7 degrees, we do not recommend to use it on

snowy icy road, not even occasionally, because we cannot guarantee the safety. We can only guarantee the expected performances of the summer tyres when the tyre model is fitted in set of 4 and the daily

temperature is above 7 degrees. We understand that in the UK it is not mandatory to use winter tyre in the winter season, but this does not mean that it is safe to use summer tyre all year around.

In your tyre size we have the MICHELIN Latitude Alpin LA2 or the MICHELIN Pilot Alpin PA4 N0 (Porsche homologated) winter tyre models available.

I hope this information was helpful. Please do not hesitate to contact us again if you have any further questions, we will be more than happy to help.

Kind regards,

Dora

MICHELIN Customer Care

No Tyre manufacturer is going to approve a size not specified by the vehicle manufacturer, the same as no Dealer will say it is o.k to fit a size not specified by the Vehicle manufacture. My guess for this would be mainly a Liability one in the event of a accident or some issue as a result using unspecified parts, tyres or anything else, as the first thing someone is going to say is but Land Rover, Michelin or who ever told me it was o.k. to use that size. That aside I have used Michelin, Continental, Pirelli and Verdestien all in 275/45 x 20" over the last five years on Sports and have never had a problem or issue with a Tyre or Distributor selling and fitting a tyre size I asked for and that includes Camskill twice. There are enough Members on the forum that have now changed to that size tyre that had there been any problems it would have been highlighted by now.


Cheers
Col

Last edited by Col on Fri Aug 03 2018 10:52pm. Edited 1 time in total

Probably my fault for asking for advice and not telling them what I wanted.

I wanted out of Conti ConnectComforts which were only lasting 20,000 miles due to feathering and transmitting every undulation in the road surface. I’ve still got the 20”S in a stack.

Thanks for your opinion/experience.