One usually fits the tyres to the conditions they are to be used in. HDAP or Heavy Duty All Purpose tyres are merely what some manufacturers offer as either options or can be gotten through them. NONE of the manufacturers of tractors make the tyres themselves.This is the first tire oriented thread I have read through. I have been through my share of tires in the past. I found that I required multiple rims with various options to be truly satisfied. Recently (a year plus ago) I went to a newer x7 with HDAPs. They have been so amazing on the lawn, in the dirt and especially in the ice and snow. I guess I assumed that everyone would just be going to these after my experience.
The OP found some great looking tires but why not just go with HDAP they use on the newer machines? Are they outrageously priced? Are others having issue with them that I am not? I really appreciate the feedback fellas.
What all manufacturers of tractors provide with their base models for uses where mowing of grass will be a major factor are the standard turf tyres, with some models that is the only thing available. Turf tyres are great for dry level grassed areas. But not everyone has that picture perfect lawn where turf tyres excel. It's when you have conditions where that dry and level aren't that turf tyres fail. Most just try and adapt in many different ways: going faster, going slower and even avoiding an area until conditions improve.
Many are completely unaware that tyres are made in a number of different tread styles & sizes other than the turf or HDAP ones that a manufacturer offers. Even the manufacturers of the smaller lawn & garden tractors know this, they just don't tell you. Look at almost any L & G tractor and look at the space between the tyre and the fender. Most mowing deck mountings are adjustable for larger tyres to be used even on the original rim. ATV or All Terrain Vehicles use many of the same standard rims that L & G tractors use. Why not take a look at the many different tread styles of ATV tyres to fit the conditions where you are?