Terra tyres

[Beefsmith]

Hi please educate me about Terra tyres as I’ve never had anything to do with them. I’m thinking of looking for a used 100hp tractor specifically for rolling seedbeds and also growing crops in the spring. As well as spring tining spring seedbeds and also topping cover crops in January/February.

all our tractors are 200hp + and a lot heavier. We’ve 650-710mm tyres on them but I’m not happy with the footprints being left especially when topping in Jan and Feb on clay land with cover crops. If we dont top them off our soils can’t dry out.

It would be an older tractor, possibly a classic but how do terras work with standard fronts with rolling radius’s etc? Do they grip or just float? Also what do the sizes mean width wise in terms of against say a 710mm?

 

[Nearly]

There's a set for a NH 8340 just popped up.on ebay...

 

[Bramble]

Have got an old set of front and rears on our NH 8340, used for rolling and early fert applications in the spring. No grip in the wet but float anywhere in the wet carrying 4x600kg bags in the fert spreader.

Make sure the wheel nuts are kept tight, check a couple of times a day to start with, we snapped quite a few wheel studs in the first season. The forces on the axle must be pretty massive so we try and be careful when moving between fields. Also it makes the tractor ridiculously wide, probably just over 3.2m, luckily we have very little road travel

 

[Rookie]

Unless your topper is front mounted, then I would say terras will flatten too much crop making it difficult for the mower to cut.

 

[Khan]

66-43 on 25" rims are old imperial equivalent to 1050/50r25. We used to run them, make a tractor almost 11ft wide. Dependent on manufacturer they are close to a 16.9r38 tyre. Be wary of going for something with a high ply rating on small tractor, they will be stiff in the sidewalls and give small contact patch. They will float well if you get the right tyre/tractor combo but agree with the comment about tramping down crop.

 

[clbarclay]

Has anyone run old school terra tyres at the same time as modern wide radials?

The old terra tyres were massively big for their time, but were bias ply construction. A radial equivalent should be much more flexible and probably give a bigger footprint to spread the weight with a narrower tyre.

 

[7740 man]

Got these 28.1 rears on, they are Russian tyres with not much flex! Good for hedge cutting though, not too much sway