Replacing front tyres only

The back tyres on our Claas are down to 25/30% and the fronts are buggered. Are the rears too worn to put new fronts on without damaging the transmission because of the difference in rolling radius?

The tractor mostly does yardwork through winter and has the post banger on all summer so doesn't a need a lot of tread.
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Farma Parma

Member
Arable Farmer
Location
Northumberlandia
Id say not, 4wd tractors allways have a small percentage of lead on the front axle so there pulling ever so slightly more anyways & of course thats only when there in 4wd, all the time there not it makes zero difference.
No doubt i'll be totally wrong but lets see what others say.
If your fronts are worn off id be getting new ones on for all the right reasons & run them rears a while yet
Good Luck
 

balerman

Member
Location
N Devon
Not ideal,but should be ok.Unless through to the canvas or getting punctures why not run the fronts on for another year then replace the whole lot.
 

thesilentone

Member
Livestock Farmer
Location
Cumbria
Worth digging deeper for more information. Their is an allowance for wear differential per axle, however it is usually quite small. In addition weight per axle also plays a part as does pressure. The obvious advice you will get is to replace them all (especially from tyre supplier).
 

Boss Man

Member
Livestock Farmer
Replacing fronts without back is no problem if the same profile of tyre is put back on as replacements. It would put less strain on the tractor running with 2 new tyres on front than it would with 2 very worn tyres. Bold tyres can cause front diff problems if run for too long as causes vibration.
 

Tim G

Member
Livestock Farmer
I reached the front tyres on our loader tractor a year ago. They were like racing slicks. Goes a lot better in 4wd now, as I think there is less wind up in the diff.
 

nails

Member
Location
East Dorset
The back tyres on our Claas are down to 25/30% and the fronts are buggered. Are the rears too worn to put new fronts on without damaging the transmission because of the difference in rolling radius?

The tractor mostly does yardwork through winter and has the post banger on all summer so doesn't a need a lot of tread.
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That will be fine , done it 3 times on one claas ares , rears sidewalls went last year on9500hrs
 
As already said,new fronts are better than worn out fronts especially if you hit the brakes on the road and it goes in to 4wd. Could be really technical and drop the pressures a bit on the front
 
You might be surprised if you put new one on. My jd 6420 was at the same point regarding tyrewear, when I switched the 4wd it was certainly noticeable. Got new fronts and no more bang when switching off.
Just changed a whole set and I hadn't realised how much difference it makes. Braking towards a junction,the front suspension would get pulled down two inches,then jump up when the brakes were released
 

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