Kerbweight accuracy - A warning!

[otherclive]

If you have an AWD vehicle they may not be able to do the brake test correctly on the rollers.

AWD or part time 4wd? Why cant they do the brake test on rollers after all AWD isnt a new feature, Land Rovers have been around a while now.

 

[RogerL]

If you have an AWD vehicle they may not be able to do the brake test correctly on the rollers.

I suspect that most MoT stations ignore that and test them on the rollers normally.

 

[RogerL]

AWD or part time 4wd? Why cant they do the brake test on rollers after all AWD isnt a new feature, Land Rovers have been around a while now.

Regardless of type of system, the 4wd will artificially increase a single axle brake performance as brakes on the other axle will be assisting to some extent.

 

[otherclive]

Regardless of type of system, the 4wd will artificially increase a single axle brake performance as brakes on the other axle will be assisting to some extent.

So how are AWD or part time 4WD tested to ensure brake performance? There must be a pass/fail criteria.If the other axle assists then it is part of the performance assessment isn't it? My Sorento and Pajero could operate in 2WD mode, but the Subaru is full time AWD.

 

[RogerL]

So how are AWD or part time 4WD tested to ensure brake performance? There must be a pass/fail criteria.If the other axle assists then it is part of the performance assessment isn't it? My Sorento and Pajero could operate in 2WD mode, but the Subaru is full time AWD.

A "Tapley Meter" should be used for MoT brake test for any vehicle which can't be test on rollers - requires a road drive.

 

[Buckman]

I suspect that most MoT stations ignore that and test them on the rollers normally.

They will bounce out of the rollers in quick time. Our MOT station does a road drive to do the brake test.

 

[Buckman]

I am sorry if I offended you as I was replying to another post in the same thread and my reply was relevant. Also I was not aware that you are now a moderator?

 

[Brasso530]

Back on topic,Their was a thread on Kuga forums about kerb weight and all the ones that went to weight bridge were about 100kg more than what they were told/on v5.

 

[Parksy]

I am sorry if I offended you as I was replying to another post in the same thread and my reply was relevant. Also I was not aware that you are now a moderator?

He isn't but I am.
I've removed the contentious comment and the quote which shows it.

 

[Lutz]

Back on topic,Their was a thread on Kuga forums about kerb weight and all the ones that went to weight bridge were about 100kg more than what they were told/on v5.

That doesn’t surprise me one bit. I’ve come across differences of up to 150kg. After all, the V5 figure is mass in running order and not kerbweight.