75mph ST tire
I offer this only as info for the always entertaining and ongoing argument....ooops, I mean "discussion" regarding tires. I was out this morning shopping for a new horse trailer, so of course I looke...
Forum Discussion
gmw photos wrote:
Barry, to look at this more specifically for a given application though, is the following a good thought process:
1. Ensure the tire(s) I am choosing have a load capacity that exceeds the capacity of the axle fitted ( bearing in mind whether single or dual, and the different load capacities when used either way ). And further of course, compare the capacities of both the axle and tires to the actual load as weighed.
1a. define "how much" load reserve is logical ? Maybe 20% ?
2. Ensure the tires have a speed rating that is appropriate for the intended use, again with a logical "reserve".
3. Have accurate weights of the axles, and preferably by individual tire location.
To the subject of getting individual tire weights, I am getting ready to attempt to come up with a accurate method of getting individual tire weights using a Sherline tongue scale. I no longer have access to scales used for determining weights on race cars, but I "think" I can come up with something using the Sherline. I'll report back whether this experiment works.
In general, yes, that is a good thought process. But I would have done it differently.
First, I wouldn't tie the tire's load carrying capacity to the axle's load carrying capacity as it just might be that the vehicle manufacturer didn't do a good job of this.
Second, I think every tire should have a 15% design reserve capacity. This is in line with what the car and pickup truck manufacturers use - and they have a ton of experience and good sources of feedback.
