27 July 2022

Welcome to the September issue of profi. We have a tyres and tracks theme in this issue as we compare eight central tyre inflation systems, get feedback from a farm running a John Deere 8RX while another has opted for a Fendt 939 with the firm's VarioGrip pressure system. And to round it off we look at what you need to consider when changing tyre sizes. Plus there is all the other great profi content as shown below.

Test

Eight central tyre pressure systems compared . . . . . . . . . . .  16

Kubota BV5160 Plus SC14 round baler . . . .……. 30

Seven forage trailers compared – Part 2 . . . . . . . 36

Driving impression

Fendt Slicer 310F and 960 mower combination . . . .…….  44

Pttinger Mergento VT9220 merger . . . .……. 46

Polaris Ranger SP570 and XP1000 UTVs compared . . . .…….  48

Deutz-Fahr 6135C RV Shift. . . .……. 52

Livestock

Gea Dairy Robot R9500 Edition 2021 . . . . . . . 56

Used machinery

Mercedes Unimogs . . . . . . 60

Workshop

Lynx Project 6800 - Part 3 . . . . . . . 68

Technical

Power harrow drill systems compared – Part 2. . . . . . . 72

Changing tyre sizes – what you need to know . . . . . . . 78

AgLeader Speed Steer auto-steer system . . . . . . . . . . . 82

Agra GPS Chameleon  . . . . . . . . . . . . 84

Report

Tracks or tyres owner opinion . . . . . . . . 88

Comment: Nigel Thornborrow . . . . 95

Regulars

News.. . . . . . . . . . . . . . . . . . . . . . . 6

Preview . . . . . . . . . . . 96

Spot the difference . . . . . . . . . . . 98

Contractor prices . . .  . . . . 99