Can someone tell me the difference between 4x2 - 6x2 and 6x4 with a tractor unit and when should they be serviced
Swampey:
Can someone tell me the difference between 4x2 - 6x2
Swampey:
when should they be serviced
sorry, don’'t know - not my field
4 x 2 and 6 x 2 one drive axle only
6 x 4 two drive axles
I believe that under normal circumstances the operators license require the vehicle to be serviced every six weeks.
tachograph:
I believe that under normal circumstances the operators license require the vehicle to be serviced every six weeks.
I was going to say that then I though it might just be an inspection every 6 weeks… 
tachograph:
I believe that under normal circumstances the operators license require the vehicle to be serviced every six weeks.
The O licence only require an inspection, many trucks are only serviced for their birthdays.
Even Vosa have suggested 6 weekly inspections is not always necessary
Wheel Nut:
tachograph:
I believe that under normal circumstances the operators license require the vehicle to be serviced every six weeks.The O licence only require an inspection, many trucks are only serviced for their birthdays.
Even Vosa have suggested 6 weekly inspections is not always necessary
company i worked for did there inspections at 10000km or 6 weeks which ever came first and service were done at 80000km
Wheel Nut:
tachograph:
I believe that under normal circumstances the operators license require the vehicle to be serviced every six weeks.The O licence only require an inspection, many trucks are only serviced for their birthdays.
Even Vosa have suggested 6 weekly inspections is not always necessary
I stand corrected, thanks for the link 
The numbers (4x2, 6x2, 6x4) are to do with wheels. The first number is the total number of wheels, the next is the number which are driven.
So a 4x2 has 4 wheels (2 axles) of which 2 wheels (1 axle) are driven.
A 6x2 has 3 axles of which one is driven.
A 6x4 has 3 axles of which two are driven.
This also holds true for other vehicles, hence where the term “4x4” for a 4 wheel drive car comes from.
Paul
assuming you count a twin wheel as one wheel !repton:
The numbers (4x2, 6x2, 6x4) are to do with wheels. The first number is the total number of wheels, the next is the number which are driven.So a 4x2 has 4 wheels (2 axles) of which 2 wheels (1 axle) are driven.
A 6x2 has 3 axles of which one is driven.
A 6x4 has 3 axles of which two are driven.This also holds true for other vehicles, hence where the term “4x4” for a 4 wheel drive car comes from.
Paul
as you know a 4x2 has 6 wheels and an 6x2 can have 8 or 10 wheels 
</pedantic mode>
Denis F:
assuming you count a twin wheel as one wheel !
Yes, for the purposes of these definitions, two wheels attached to the same hub count as one otherwise it all gets very complicated!
Paul
repton:
Denis F:
assuming you count a twin wheel as one wheel !Yes, for the purposes of these definitions, two wheels attached to the same hub count as one otherwise it all gets very complicated!
Paul
Paul is correct unless you use a four in line when each wheel is counted separately.
or a 28 wheel truck
Denis F:
assuming you count a twin wheel as one wheel !repton:
The numbers (4x2, 6x2, 6x4) are to do with wheels. The first number is the total number of wheels, the next is the number which are driven.So a 4x2 has 4 wheels (2 axles) of which 2 wheels (1 axle) are driven.
A 6x2 has 3 axles of which one is driven.
A 6x4 has 3 axles of which two are driven.This also holds true for other vehicles, hence where the term “4x4” for a 4 wheel drive car comes from.
Paul
as you know a 4x2 has 6 wheels and an 6x2 can have 8 or 10 wheels
</pedantic mode>
IIRC, twin wheels bolted together are counted as a single wheel if the centres are less than 18" apart.
Many moons ago when I did my CPCs, that was one of the exam questions.
TBH, I’m not sure whether that’s still the case today though…
And an 18 wheeler over here is on 5 axles…
General rule would be that 6x2 and 4x2 tractors are standard highway trucks while 6x4 or 8x4 are special types in the UK. Here, everything is 6x4 because they seem to think we need it. But if you get out in the boonies or on the oilfields you will see 10x6 tractors and some which are 8x8 with 3 full drive axles and also with a driving diff on the steers.
Then you have the 14x8… youtube.com/watch?v=eXKfw5mKNSI
Imagine trying to go through Milton Keynes with that!!