19.5 tire question
I know some of you have upgraded to a 19.5 commercial tire, I have a 09 chev 2500HD that I want to up grade. I am looking at Toyo M608z in a 245/70R19.5 tire, do any of you have a 09 or later chev and...
Forum Discussion
Without naming each poster the following is a response to most of the posts in order: As I stated in a earlier reply there are trade offs to every gain in performance in regards to tires and wheels. ie; 19.5s are heavier and thereby have their own set of issues. More stress on unsprung parts.
Performance perramaters improve as the tire ages...tire life and mpg.
The tire when new provides a better ride.
It's the amount of air that a tire can carry that allows for greater load carrying capacities.
When higher air pressures are needed they can be obtained easily at any tire dealer at no charge.
As to deep lugged tread designs...those with the more aggressive deeper treads are torque eaters, which simply means less mpg and overall performance when under load. This is greatest during the first 10 to 15% of tires life. And so the greater use the more cost and less performance.
Sidewall flex...all 19.5s, 22.5s and 24.5s are constructed the same...stiff.
This wasn't mentioned but a common dis-belief is that some tires are softer or harder than others...not true. All highway use tires, from a VW to a KW use a 72 hardness compound. The only time a tire will seem like it's harder is when it dries out and looses its' elasticity. However it still retains its' 72 hardness.
The best wheel tire combo is steel wheels and radial tires. However pretty alloy wheels look they do not compliment a radial tire as well as a steel wheel. Steel wheels flex...alloys do not. The preference is to have a combination wheel tire that both flex...not to have a tire doing all of the work. In this case 19.5s don't flex much but some is better than none...
And remember that all of the above is related to a dynamic rather that a static situation.
Performance perramaters improve as the tire ages...tire life and mpg.
The tire when new provides a better ride.
It's the amount of air that a tire can carry that allows for greater load carrying capacities.
When higher air pressures are needed they can be obtained easily at any tire dealer at no charge.
As to deep lugged tread designs...those with the more aggressive deeper treads are torque eaters, which simply means less mpg and overall performance when under load. This is greatest during the first 10 to 15% of tires life. And so the greater use the more cost and less performance.
Sidewall flex...all 19.5s, 22.5s and 24.5s are constructed the same...stiff.
This wasn't mentioned but a common dis-belief is that some tires are softer or harder than others...not true. All highway use tires, from a VW to a KW use a 72 hardness compound. The only time a tire will seem like it's harder is when it dries out and looses its' elasticity. However it still retains its' 72 hardness.
The best wheel tire combo is steel wheels and radial tires. However pretty alloy wheels look they do not compliment a radial tire as well as a steel wheel. Steel wheels flex...alloys do not. The preference is to have a combination wheel tire that both flex...not to have a tire doing all of the work. In this case 19.5s don't flex much but some is better than none...
And remember that all of the above is related to a dynamic rather that a static situation.
