BWT is setting out to make ag wheels simple, and as we often get asked what the best rowcrops are for New Holland T7 tractors we’ve put together a quick guide. All the sets that we recommend in this article are our most commonly sold, pre-checked sets from our Core Product range.
New Holland T7 LWB and SWB
There are two important things to consider when choosing rowcrop wheels – the width of the tyre and the weight carrying capacity.
Our most common selling all-rounder rowcrop wheel for the T7 (and top selling size across all our sets) is the 380/90R50. In our Core Range we also offer 320/90R54, often used for more specialist crops or spraying in an established crop, or the wider 480/80R46 which is more popular in Scotland. Read on for more information about the sets we sell:
The best rowcrop size for the NH T7 is 380/90R50 & 380/85R34. This is the most popular option and the size we most often recommend.
The 380 wide tyre is the metric equivalent to the 14.9 imperial size. It’s our most common size for potato growing (destoning, planting, spraying, irrigation and harvesting) and also cereals (particularly spraying and fertilizer spreading).
Our three most popular options in this size are as follows:
Maxam offer a high load rating tyre in their rowcrop tyres. The rear tyres have a 160A8/B load rating, which means that they can carry 4500kg per wheel up to 50kmh or 9 ton across the back axle. This is the set that we’d recommend if the tractor will be carrying a heavy load, such as a mounted fert spinner, or pulling a heavy trailer.
Best for: The best value, high-load rowcrop tyres
Mitas also offer a high load rating tyre in their rowcrop tyres. They have the same load rating as the Maxam, so are rated to carry 9 ton across the back axle up to 50kmh.
Best for: Best in class for high-load rowcrop tyres
BKT offer a good mid-range tyre but this set doesn’t have as high a load rating as the Maxam or the Mitas options. The rear tyres have a 151A8/B load rating, so is rated to carry 3450kg per wheel up to 50kmh, or 6.9 ton across the back axle. This is easily overloaded so if the tractor will be carrying a mounted fert spinner or pulling a heavy trailer then we’d definitely recommend the higher load rating.
While BKT do also offer a 380/90R50 in a higher load rating it doesn’t work with the 4WD ratio on the T7 with a BKT front so we don’t list it as a set.
This size is much less common but some customers prefer the narrower 320 width tyre for more specialist applications. It is often used for crops such as lettuce, carrots or asparagus.
We offer the BKT brand in the 320/90R54 size as it has the highest load rating of all tyre brands in this size. It has a 156A8/B load rating so is rated to carry 4000kg per wheel up to 50kmh, or 8 ton across the back axle.
The third rowcrop option that we sell for the NH T7 is the 480/80R46. Some customers prefer the wider 480 width rowcrop as it makes the wheels a bit more versatile – narrow enough to do rowcrop work but wide enough to give a bit more stability when pulling a trailer on the road. It is more popular in Scotland.
The Maxam has a rear tyre load rating of 158A8/B so is rated to carry 4250kg up to 50kmh, or 8.5 ton across the back axle.
Best for: Budget multi-purpose option
The BKT set has the same load rating as the Maxam set – the rear tyres are rated to carry 4250kg up to 50kmh, or 8.5 ton across the back axle.
Best for: Mid-range multi-purpose option
Why isn’t there a 420 option?
Unfortunately, as yet, no tyre manufacturers make a 420 width tyre in an equivalent height to the 380/90R50 (the tallest that we’d put on a T7). If a only420 width will work, you can drop down a size to a 420/80R46. This will drop the tractor down a bit and give you a bit less clearance – to give you an idea of how much we can compare BKT technical tyre data for their 380/90R50 and 420/80R46 tyres:
420/80R46 BKT 151D/162A8 – overall diameter 1840mm – static loaded radius 863mm
380/90R50 BKT 151A8/B – overall diamater 1954mm – static loaded radius 913mm
So the 420 tyre is 114mm shorter overall than the 380, or the equivalent of 57mm smaller all around the circumference of the tyre. The difference in the static loaded radius of the tyre tells us that the 420/80R46 will have 50mm less clearance than the 380/90R50.
These measurements will vary when comparing different tyre brands.
What track widths are available?
72″, 80″ and 2 metre are the most common track widths we get asked for but rowcrop sets in our Core Range can be built up to anything from 72″ to 80″. If you’re needing more than one track width you may need to go for adjustable rims – a set of rowcrops on adjustable rims usually comes out about £500 more expensive.