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Old 20 November 2013, 18:24   #61
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This should make it a bit clearer. Apologies for it being badly drawn and the wrong symbols...

Make sure you understand MAM and unladen weight before trying to use it.
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Old 20 November 2013, 18:34   #62
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Why the hell can't the gov have chart like this !!!!
Test it is then!!!
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Old 20 November 2013, 18:45   #63
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Old 20 November 2013, 19:41   #64
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https://www.gov.uk/towing-rules/y/ca...ght-vehicle/no
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Old 21 November 2013, 00:53   #65
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Quote:
Originally Posted by Nos4r2 View Post
This should make it a bit clearer. Apologies for it being badly drawn and the wrong symbols...

Make sure you understand MAM and unladen weight before trying to use it.
Just spotted a slight error. If you had a 750kg braked trailer (unusual, but they do exist) then it could still be legal even if the MAM of the trailer was more than half the unladen weight of the towing vehicle.
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Old 21 November 2013, 11:12   #66
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No where does it mention mam of vehicle, it says un laden weight of car and mam of trailer, and as long as the train weight is less than 3500kg.
And the car can legally tow it and weighs more. I have just checked with the deal and our local police station. Those three lines from the .gov website are as is and do not mention mam of car.

They have just changed the license again that has reduced it again to something like 750kg and that's it for b license.
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Old 21 November 2013, 11:26   #67
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kerb weight / unladen weight of vehicle + MAM of trailer both together not more than 3500kg.

( not mam of vehicle)


Mine,

Defender 90. 1750kg kerb weight
5.3 rib. 1200kg. Mam of trailer.

Total. 2950kg,

Car will tow weight and trailer is braked
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Old 21 November 2013, 11:58   #68
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That's what I looked at and makes me legal in dvla eyes and police
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Old 21 November 2013, 14:01   #69
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Originally Posted by blueboy758 View Post
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kerb weight / unladen weight of vehicle + MAM of trailer both together not more than 3500kg.

( not mam of vehicle)


Mine,

Defender 90. 1750kg kerb weight
5.3 rib. 1200kg. Mam of trailer.

Total. 2950kg,

Car will tow weight and trailer is braked


Some websites say it is the combined MAM of the trailer and MAM of the vehicle that cannot exceed 3500kg....but
According to GOV.UK it is the combined weight of the trailer and vehicle – for which I read the weight as if you were to visit a weighbridge.

in the above example of the defender 90, if your trailer is loaded to capacity, you will be able to carry an additional 550kg of cargo in the vehicle. the weight on a weighbridge would therefore be 3500kg.



Cat B = vehicles with kerb weight (unladen+driver) of up to 3500kg.

Behind which you can tow a trailer of MAM (plated maximum fully laden weight) up to 750kg. Combined train weight must not exceed 4,250kg.


Nissan kerb weight is 3210kg. So according to GOV.UK you could tow a trailer of MAM 750kg, and actually load the trailer to 750kg on the weighbridge, and only carry an additional 290kg of stuff in the back of your car – that’s not a lot – 3 passengers with light luggage.


If your trailer was rated to greater than 750kg, then this would theoretically be fine too - so long as the combined weight on the weighbridge is less than 3500kg this time. In practice this doesn't give you a lot of headroom with a heavy unladen towing vehicle - the weighbridge weight of your trailer could only be 290kg!).


With your Nissan, if you have a trailer with MAM over 750kg and you take your trailer and boat to the weighbridge and it weighs in at less than 750kg, then I would under-rate the trailer and plate it at 750kg as you will be able to carry more (4250kg as opposed to 3500kg)! (Put any fuel tanks, kit, flare boxes in the vehicle)

If you want to realistically tow a trailer with a MAM greater than 750kg, then you need a smaller vehicle (how perverse!).

The above example of unladen Defender 90 plus trailer of MAM 1200 is good, (highlighting that the kerb weight of the vehicle needs to be greater than the MAM of the trailer)

One thing to bear in mind is the 'combined weight'. You'll want to stick people and kit in the vehicle? Unladen weight is vehicle + fuel + driver.
If you had a vehicle of unladen (kerb) weight of 1800 and a trailer of MAM 1600 loaded to capacity, you could only carry one passenger and a bag! (100kg headroom to get the combined weight below 3500kg). Luckily ribs are usually light loads -

I have a 1400 MAM trailer but with the rib on the top it only actually weighs 1100kg. My vehicle has to be over 1400 unladen weight(it is 1650kg), meaning I can carry an extra 750kg of crap with me - namely 4 burly passengers and 100kg of luggage each - of which I can shove 300kg of crap in the trailer. Guidelines are that the trailer is 85% max of the weight of the car. For me this is the ‘sweet spot’ of trailer MAM and vehicle kerb weight.

I’d add a few minor touches to the flowchart
For trailers with MAM over 750kg:
Rule 1) is the unladen (kerb) weight of the vehicle under 3500kg? Yes - OK - next rule
Rule 2) is the unladen weight of the vehicle greater than the MAM (plated fully laden max weight of the trailer)? Yes - OK - next rule
Rule 3) is the LOADED weight of the trailer and vehicle (as you would get on a weighbridge) less than 3500kg? Yes - OK
Rule 4) (often overlooked) - is your loaded trailer under the towing capacity specified by the vehicle manufacturer? YES - you are legal.

For trailers with a MAM of up to 750kg
Rule 1) is the unladen weight of the vehicle under 3500kg? Yes - OK - next rule
Rule 2) is your unladen vehicle weight at least double the MAM of the trailer? Yes – ok –next rule
Rule 2) is the LOADED weight of the vehicle plus trailer (as you would get on a weighbridge) under 4250kg? Yes - ok - next rule
Rule 3) (often overlooked) - is your loaded trailer under the towing capacity specified by the vehicle manufacturer? YES - you are legal
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Old 21 November 2013, 14:15   #70
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Going off that I'm legal
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