Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511
Anyone understand the speed rating on tyres?
I bought two trailer wheels and tyres from e bay. As advertised 145/80R10, what I got was 145/80B10
So I think I have been had and that a B rating is only good for 31mph. Where as an R is good for 108 mph. Granted that I wont be needing the full capability of an R I am sure that I will need a bit more than 31mph.
These are the only markings I can find in the tyres and in the load index it has a B.
Have I read this correctly?
Thanks
Discovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂
26th Apr 2021 8:04 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4522
No, the B is for 'Bias Ply'. The speed/load rating is the 74N - 87mph, 387kg max load Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
Last edited by rrhool on 26th Apr 2021 8:37 pm. Edited 1 time in total
Sorry ... think you've received wheelbarrow tyres..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
26th Apr 2021 8:18 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4522
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
26th Apr 2021 8:19 pm
nigethecat
Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4244
What happened to Z rated tyres?I want to see the sweets before I get into your windowless van... I'm not stupid!
Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone)
26th Apr 2021 8:21 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4522
Mmm. Not sureRichard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
26th Apr 2021 8:24 pm
charlietortoise
Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511
Load rating
I think the 74 is the load ratingDiscovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂
26th Apr 2021 8:27 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4522
Yep, N = 87mph 74 = 387kgRichard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
26th Apr 2021 8:31 pm
charlietortoise
Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511
Relief
Thats good then, they are ok then speed wise. I only need 60mph
Thanks for the clarificationDiscovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂
26th Apr 2021 8:36 pm
gareth71
Member Since: 10 Apr 2016
Location: North-east Wales
Posts: 597
...
Last edited by gareth71 on 27th Apr 2021 2:34 pm. Edited 1 time in total
26th Apr 2021 9:24 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4522
^^
Did you not read any of the previous replies? Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
26th Apr 2021 9:55 pm
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2083
The letter in the tyre size is nothing to do with the load and speed rating. No letter is cross ply construction, B is bias ply and R is radial ply.
My 1955 Land Rover came with 6.50 x 16 tyres, which were cross ply, I now use 6.50R x 16 , Radials.
27th Apr 2021 10:32 am
charlietortoise
Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511
Ply
Can a Bias ply run on the same axle as a Radial ply? I am thinking not but I would like to confirm. ThanksDiscovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂
27th Apr 2021 10:37 am
ronp
Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15264
Re: Relief
charlietortoise wrote:
Thats good then, they are ok then speed wise. I only need 60mph
For a D3 I think your insurance company would disagree.
And NO, I wouldn't mix tyre construction on the same vehicle, never mind same axle....... always on the road less travelled 🚧
27th Apr 2021 10:43 am
charlietortoise
Member Since: 29 Oct 2011
Location: Staffordshire
Posts: 511
Thanks
Thanks for clarifying the ply mix. It is for a trailer so that why it tops out at 60mph. I am sending them back. The ebay tyre place was a bit shirty over it, all the adverts said it was a 145/80R10 and what I got was a B10Discovery 4 3.0 HSE 2010 year. I like it a lot. Now with winch 😂
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... All LED interiors lights, DRLs, Spare Wheel protector.
Thats good then, they are ok then speed wise. I only need 60mph
