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Marsie



Member Since: 20 Jul 2011
Location: sheffield
Posts: 375

United Kingdom 2008 Range Rover Sport TDV8 HST Stornoway Grey
Anyone running Cooper LTZ 275/45/20s?

Had them on my D3 and toying with the idea of getting 4 for my RRS. Obviously they are slightly bigger than the current 275/40/20 continental/scorpion zeros but hopefully they will give a slightly better ride and fill the arches a bit more??

Is anyone running these on their RRS? if so, how do you rate them?
Paul Thumbs Up

Post #392948 Tue Aug 27 2013 5:44pm
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Marsie



Member Since: 20 Jul 2011
Location: sheffield
Posts: 375

United Kingdom 2008 Range Rover Sport TDV8 HST Stornoway Grey

Guess not? in that case then anyone running General Grabber ATs in 275/45/20??
Paul Thumbs Up

Post #394167 Sat Sep 07 2013 11:47am
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Oz Sport



Member Since: 06 Jul 2011
Location: Perth
Posts: 15

Australia 

use the search function.

It would have been covered 1000 times at least.

Post #394271 Sun Sep 08 2013 5:50am
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Marsie



Member Since: 20 Jul 2011
Location: sheffield
Posts: 375

United Kingdom 2008 Range Rover Sport TDV8 HST Stornoway Grey

Why didn't i think of that Rolling Eyes

Post #394292 Sun Sep 08 2013 1:08pm
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AJS4X4



Member Since: 28 May 2008
Location: Surrey
Posts: 286

United Kingdom 

The 275/45x20 is a popular fitment now. Thumbs Up Please call us 01737 241370 for the quickest response Smile

www.ajstyres.co.uk

Post #395834 Mon Sep 23 2013 6:02am
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Marsie



Member Since: 20 Jul 2011
Location: sheffield
Posts: 375

United Kingdom 2008 Range Rover Sport TDV8 HST Stornoway Grey

Cheers Andy Thumbs Up , in your opinion which tyre would you go for in that size?

Cooper LTZ
Grabber AT

They seem to be a similar price and both get good reports but if i remember correctly the AT has a higher speed rating? Currently running 245/70/20 conti's on front and p zeros on rear but all will be ready for swapping before the winter so i wanted to make the right choice Thumbs Up
Paul

Post #395847 Mon Sep 23 2013 7:13am
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jimbg



Member Since: 29 Jan 2013
Location: By the River Dart
Posts: 1726

2013 Range Rover Sport SDV6 HSE Orkney Grey

AJS4X4 wrote:
The 275/45x20 is a popular fitment now. Thumbs Up


How much does it affect the speedo reading have this size tyre? 2023 P440e SE Dynamic on order -cancelled

2022 HSE Dynamic P400e

2017 Discovery 3.0 HSE Silicon Silver Nimbus interior and a few extra toys SOLD

2013 HSE Black, Orkney Grey, Ebony Seats and Ivory Interior SOLD

2006 HSE

Plus a few other cars inbetween!

Post #395854 Mon Sep 23 2013 8:11am
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Nottsman



Member Since: 29 Jan 2013
Location: Nottingham
Posts: 29

United Kingdom 

Makes the speedo spot on now according to the non-penalty speed indicators that I pass on the roads.
I am running 275 45 20 General GT. 12MY RRS 3.0 SDV6 HSE Lux Sumatra / Black + contrast/ Grand Black
2010 Disco4 3.0 TDV6 HSE Nara Bronze - Missed very much
2008 Disco3 2.7 TDV6 XS Stornoway - Now gone

Post #395857 Mon Sep 23 2013 9:03am
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muddywheels
Milk Float Man


Member Since: 30 Jun 2010
Location: East Riding of Yorkshire
Posts: 5584

England 

According to calculator the 45 profile will give 3.8% difference in speedo reading Confused

http://www.miata.net/garage/tirecalc.html Wanted a Series 2 LR since childhood but previously owned MY16 Disco Sport HSE TD4 Auto, MY13 RR Sport Black Edition TDV6 Auto, MY10 RR Sport HSE TDV6 Auto, 2007 Freelander 1 Freestyle TD4 Soft Top, 2009 Freelander 2 GS TD4 Auto, 2007 Freelander 2 GS TD4, 2004 Disco 2 Metropolis Auto, 2002 Disco 2 GS, 2000 Freelander 1 SE TD4 SW

Still hoping for a S2 one day!

Post #395858 Mon Sep 23 2013 9:55am
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Nottsman



Member Since: 29 Jan 2013
Location: Nottingham
Posts: 29

United Kingdom 

Quite right about the 3.8 % increased diameter........I used to get a reading of 28 - 29 mph going past the speed monitors with my cruise set at 30 when I had 275 40 20 tyres on.

Now, with the slightly larger 45 profile tyres on they read 30 when I'm set at 30.

Checked this several times on different speed monitors in various villages and got same result.

@Marsie......GG AT is speed rated at H (130 mph) while the LTZ is rated S (118) if I recall correctly 12MY RRS 3.0 SDV6 HSE Lux Sumatra / Black + contrast/ Grand Black
2010 Disco4 3.0 TDV6 HSE Nara Bronze - Missed very much
2008 Disco3 2.7 TDV6 XS Stornoway - Now gone

Post #395866 Mon Sep 23 2013 12:09pm
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jimbg



Member Since: 29 Jan 2013
Location: By the River Dart
Posts: 1726

2013 Range Rover Sport SDV6 HSE Orkney Grey

Nottsman,

Did you notice a real improvement in the ride with this size? I love my HSE Black apart from the harsh ride. 2023 P440e SE Dynamic on order -cancelled

2022 HSE Dynamic P400e

2017 Discovery 3.0 HSE Silicon Silver Nimbus interior and a few extra toys SOLD

2013 HSE Black, Orkney Grey, Ebony Seats and Ivory Interior SOLD

2006 HSE

Plus a few other cars inbetween!

Post #395880 Mon Sep 23 2013 1:55pm
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muddywheels
Milk Float Man


Member Since: 30 Jun 2010
Location: East Riding of Yorkshire
Posts: 5584

England 

I used to run 19" in winter and the ride was much better Thumbs Up

Possibly going to ditch 20" and run 19" all year round Embarassed Wanted a Series 2 LR since childhood but previously owned MY16 Disco Sport HSE TD4 Auto, MY13 RR Sport Black Edition TDV6 Auto, MY10 RR Sport HSE TDV6 Auto, 2007 Freelander 1 Freestyle TD4 Soft Top, 2009 Freelander 2 GS TD4 Auto, 2007 Freelander 2 GS TD4, 2004 Disco 2 Metropolis Auto, 2002 Disco 2 GS, 2000 Freelander 1 SE TD4 SW

Still hoping for a S2 one day!

Post #395887 Mon Sep 23 2013 2:28pm
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Marsie



Member Since: 20 Jul 2011
Location: sheffield
Posts: 375

United Kingdom 2008 Range Rover Sport TDV8 HST Stornoway Grey

Nottsman wrote:

@Marsie......GG AT is speed rated at H (130 mph) while the LTZ is rated S (118) if I recall correctly


Cheers Nottsman, Cant see me doing more that 118mph Mr. Green so i suppose its down to personal taste Thumbs Up

Post #395924 Mon Sep 23 2013 7:18pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8800

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

muddywheels wrote:

Possibly going to ditch 20" and run 19" all year round Embarassed

That's what I do. My winter tyres are 255/50 and my others are 255/55. The ride is much better on 255/55/19 than on 275/40/20. And the 255/55/19s fill the arch better too Thumbs Up 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #395939 Mon Sep 23 2013 8:47pm
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Nottsman



Member Since: 29 Jan 2013
Location: Nottingham
Posts: 29

United Kingdom 

Jim...definite ride improvement going from the 275/40 to 275/45 in 20 inch, bearing in mind I was going from some spent Contis to new General GT in the larger size. Higher sidewall height to rim diameter ratio usually equates to greater ride comfort.
As the guys above have said, the 19 inch wheels which give more sidewall height improves ride even more...especially the 255/55/19 which is Disco size and is 1% more diameter than 275/45/20 but with one inch more rubber.
The higher sidewall also gives some extra protection against kerbing your alloys but still not missus-proof as I have already found out. Big Cry 12MY RRS 3.0 SDV6 HSE Lux Sumatra / Black + contrast/ Grand Black
2010 Disco4 3.0 TDV6 HSE Nara Bronze - Missed very much
2008 Disco3 2.7 TDV6 XS Stornoway - Now gone

Post #395979 Tue Sep 24 2013 9:58am
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