Our grass & grain trailers have a high-capacity monocoque-body design and are ideal for transporting a range of materials.







Built using over 20 years experience in Wales
Custom built
Competitively priced
Aftersales services
Hydraulic brakes
LED lights
Flashing beacon
Number plate lights
Protected rear lights to prevent damage
Our grass & grain trailers are built as standard with box frame work with cross members at every 18". All but the 6 ton are twin ram and come on a spring suspension. Standard 5mm floor and 3mm sides up to 12 ton the 4mm sides for the 14 & 16 ton.
Body length: 18ft or 20ft
Body width: 8ft
Axle: 2x10 stud
Brakes: 405x185 comm
Tyres: Super Singles or 550x45x22.5
Grain Sides: 42" sides
Grass Sides: 7' 6" sides
Body length: 12ft
Body width: 7ft 6"
Axle: 1x6 stud
Brakes: 300x60
Tyres: 12.5x80x15.3
Body length: 14ft
Body width: 7ft 6"
Axle: 2x6 stud
Brakes: 300x60
Tyres: 12.5x80x15.3 or 400x15.5
Body length: 14ft or 16ft
Body width: 8ft
Axle: 2x6 stud or 2x8 stud
Brakes: 300x60 or 300x90
Tyres: 400x15.5 or Super Singles
Body length: 16ft
Body width: 8ft
Axle: 2x8 stud
Brakes: 400x80
Tyres: Super Singles or 550x45x22.5
Body length: 16ft or 18ft
Body width: 8ft
Axle: 2x10 stud
Brakes: 405x185 comm
Tyres: Super Singles or 550x45x22.5
We can make bespoke trailers but the following are the most popular optional extras.
Oversized tyres for the 6, 8 and 10 tonnes models:
400 x 65 x 15.5 (14 Ply) and 340 x 65 x 18 (road tyre)
Oversized tyres for the 12 and 14 tonnes models:
550 x 45 x 22.5 (Floatation) and 435 x 50 x 195 (road tyre)
Tir Bont Farm, Foelgastell, Llanelli, Carmarthenshire SA14 7HL
01269 832999
M4 Trailers supply quality agricultural trailers throughout the UK. Your first choice in agricultural trailers and equipment.