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Tyre size
Rondomm
 

Posts: 3
Joined: Jun 2018
Location: Scotland
Post: #1
Tyre size

We are upgrading wheels from 18 to 20”, however the factory standard tyre sizes for each rim reduces the rolling circumference on 20’s (235x60 R18 vs 245x45 R20) from 2322.3mm to 2288.7mm (1.47% reduction).

Alternatively we can fit 255x45 R20 which have a circumference of 2316.9mm, only 0.23% reduction.

Obviously I want speedo to be as accurate as possible, and wonder if there is a reason for this, or if anybody has changed tyre size already?

The price of the tyres isn’t too different wither.
Cheers
28-06-2018 06:19pm
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benzina
 

Posts: 836
Joined: Sep 2011
Location: Australia
Post: #2
RE: Tyre size

Exactly. I fitted 255x45 R20 to my shadow chrome 20'' rims on delivery when new for this very reason, and to be a touch more meaty looking too.

2012 Dynamic SD4 Auto 5-Door / Indus / Black Roof / Vortex / AD / Style 7 Alloys / Panoramic Roof / Rear Vents / BSM / TPMS / Sat Nav
29-06-2018 06:53pm
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RogB
 

Posts: 98
Joined: Jul 2016
Location: North Nottinghamshire
Post: #3
RE: Tyre size

I have a 2011 Prestige with the standard diamond cut 19'' prestige alloys, but painted gloss black.
Tyres are currently the standard 235/55/19 but are a cheap make unknown to me so ive no idea how long they will last or what they are like in winter conditions.
Would a 255/55/19 tyre fit with no issues regarding clearance, scrubbing or rolling diameter ?
Black circles are showing the Avon ZV7 in both sizes, but the 255 is £20 cheaper per tyre than the 235 for some reason.

TIA

Rog

2012 Evoque Pure 5 door - Santorini Black, 20'' style 6 wheels, privacy, fogs, (accident damaged wreck direct from LR approved :rollSmile
2011 Evoque Prestige 3 door - Indus Silver, gloss black 19'' style 5 wheels, privacy, partial black pack.

and a few Freelander 2 over the yearsLaughing
22-08-2018 10:49am
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Rondomm
 

Posts: 3
Joined: Jun 2018
Location: Scotland
Post: #4
RE: Tyre size

They should fit without any issue


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22-08-2018 12:30pm
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RogB
 

Posts: 98
Joined: Jul 2016
Location: North Nottinghamshire
Post: #5
RE: Tyre size

cheers, ill keep it in mind for when its time to change my current ones which were brand new when I got it but are just budget specials so no idea how long they will last given I drive 60 miles a day minimum just commuting.

is the 235/55/19 more expensive because of popularity or because they aren't common do you think ?

2012 Evoque Pure 5 door - Santorini Black, 20'' style 6 wheels, privacy, fogs, (accident damaged wreck direct from LR approved :rollSmile
2011 Evoque Prestige 3 door - Indus Silver, gloss black 19'' style 5 wheels, privacy, partial black pack.

and a few Freelander 2 over the yearsLaughing
22-08-2018 01:21pm
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Rondomm
 

Posts: 3
Joined: Jun 2018
Location: Scotland
Post: #6
RE: Tyre size

Yeah I think more suv’s Use the wider tyres, have a look here:
https://www.camskill.co.uk/m57b0s0p0/SUV..._-_19_inch
you can get a Pirelli for £101 each and should find black circles very close in cost including fitting, and if not could order and have a local garage for them for £10 a tyre
22-08-2018 01:43pm
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RogB
 

Posts: 98
Joined: Jul 2016
Location: North Nottinghamshire
Post: #7
RE: Tyre size

i like the sound of Pirelli for £101 Smile

2012 Evoque Pure 5 door - Santorini Black, 20'' style 6 wheels, privacy, fogs, (accident damaged wreck direct from LR approved :rollSmile
2011 Evoque Prestige 3 door - Indus Silver, gloss black 19'' style 5 wheels, privacy, partial black pack.

and a few Freelander 2 over the yearsLaughing
22-08-2018 01:46pm
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