Tyre Load Rating Numbers - Defender 130 Single Cab Chassis

[Jason]

Hi All I am up for some new tyres and am confused about the tyre loading information on the truck. Can anyone tell me why loading has two numbers rather than one within the tyre information i.e 7.50R16 108N/116N so its the 108 and 116 that I am unsure about. Thanks!184612R

[BreakingBad]

The number (108,116) refers to the load. The letter (N) refers to the speed.

as SteveG pointed out below, N=140km

108 = 1000kg
116 = 1250kg

I believe the first number is the rating when used on a 'single axle' like on your 130.

And the second number refers to use on a double axle which is more common on trucks ie: where the axle has two tyres on the driver's side and two on the passenger's side.

[steveG]

My interpretation of that is you can run either of those load rating tyres at those pressures.

You shouldn’t go to a lesser load rating tyre, but can go higher.

The N is speed rating - 140kmh

My ‘98 130 single cab has this placard. Doesn’t mention load ratings but notes the tyres need to me able to support the max axle load.

https://uploads.tapatalk-cdn.com/20230327/3f5afd098fb8db0f4b9b78e07b9d1a85.jpg


Steve

[BreakingBad]

My interpretation of that is you can run either of those load rating tyres at those pressures.

You shouldn’t go to a lesser load rating tyre, but can go higher.

The N is speed rating - 140kmh

My ‘98 130 single cab has this placard. Doesn’t mention load ratings but notes the tyres need to me able to support the max axle load.

https://uploads.tapatalk-cdn.com/20230327/3f5afd098fb8db0f4b9b78e07b9d1a85.jpg


Steve


Apparently genuine 130 rims are rated at 2200kg to theoretically support the entire axle load on one wheel but it's hard to find a tyre that is rated at 2200kg.

[Jason]

Hard to find a tyre that is rated at 2200kg.

Thanks for the information, my current tyres are the original Michelin XZL 116/N but 4 month wait for those so looking at alternatives.

[Jason]

The number (108,116) refers to the load. The letter (N) refers to the speed.

as SteveG pointed out below, N=140km

108 = 1000kg
116 = 1250kg

I believe the first number is the rating when used on a 'single axle' like on your 130.

And the second number refers to use on a double axle which is more common on trucks ie: where the axle has two tyres on the driver's side and two on the passenger's side.

Thanks that makes sense, so a 114 tyre will be fine….

[BreakingBad]

You should also consider 235/85R16

They are usually 120Q ie: 160km and 1400kg

And there's many more brands to choose from too.

[Jason]

You should also consider 235/85R16

They are usually 120Q ie: 160km and 1400kg

And there's many more brands to choose from too.

Yes I have been considering that option as my 90 has these. Although I do like the taller look on the 130.

[B.S.F.]

A bit OTThis is what it says on my 7.00 16 bias belted tyres. I believe the lower rating per wheel with dual wheels is to ensure that the tyres don't come in contact with each other under any condition..W.

[BreakingBad]

A bit OTThis is what it says on my 7.00 16 bias belted tyres. I believe the lower rating per wheel with dual wheels is to ensure that the tyres don't come in contact with each other under any condition..W.


Ha, in my earlier post I originally wrote that the lower number was for dual axles but then did a quick search to confirm but the first result said it was the other way around so I changed it.

And that has jogged my memory. I recall reading somewhere that the lower number is used for dual axles as a kind of safety factor and is intended to limit the overall load on the double axle so in the case of one tyre failing the other tyre can still support the load. Not sure of the safety factor.

[Jason]

Ha, in my earlier post I originally wrote that the lower number was for dual axles but then did a quick search to confirm but the first result said it was the other way around so I changed it.

And that has jogged my memory. I recall reading somewhere that the lower number is used for dual axles as a kind of safety factor and is intended to limit the overall load on the double axle so in the case of one tyre failing the other tyre can still support the load. Not sure of the safety factor.

I have been going back and forth on this myself. I read one article that commercial vehicles in general have the 2 figures. I read one article that the first number is single, second is dual axle. Having said that I dropped into a couple of tyre shops and both gave me opposite answers so will continue my research including the tyre size change as plan B.

[BreakingBad]

I have been going back and forth on this myself. I read one article that commercial vehicles in general have the 2 figures. I read one article that the first number is single, second is dual axle. Having said that I dropped into a couple of tyre shops and both gave me opposite answers so will continue my research including the tyre size change as plan B.

Maybe the order does not matter but the lower number always refers to dual axle??

[Jason]

Maybe the order does not matter but the lower number always refers to dual axle??

I think I will base my search on that, unfortunately that really narrows the 7.5r16 options. Maybe ill just order the Michelin zxl’s. It seems choices are mud or tarmac nothing in the AT range.

[DazzaTD5]

7.50x16, 235/85R16, 265/75R16 you will find have the same rolling diameter, so the ancient old 7.50x16 is no taller, just skinny.

I run 265/75R16 Yokohamma Geolander on my Dad's 130 and have done for years, just not on the std 130 wheels as they are too skinny.

A 235/75R16 will fit fine, be better on and off road there really is no comparison.

[BreakingBad]

And further to what DazzaTD5 said, you will be able to source 235/85/r16 a lot easier than 7.50x16

[DazzaTD5]

7.50x16, 235/85R16, 265/75R16 you will find have the same rolling diameter, so the ancient old 7.50x16 is no taller, just skinny.

I run 265/75R16 Yokohamma Geolander on my Dad's 130 and have done for years, just not on the std 130 wheels as they are too skinny.

A 235/75R16 will fit fine, be better on and off road there really is no comparison.

i ment to type 235/85R16 !!