Does Speed rating matter ?????

So Im looking at replacing my tires on my 07 tacoma 4 cylinder 4x4. I currently have Wrangler Armortrac's on it. I am now hauling a 3000-3200lb camper ( yes it does fine towing ). Im looking at putting on Cooper Dicoverer RXT's. NTB has them for a great price. They are E rated which I want for towing, but the speed rating in a "R". The armortrac's and original tires where rated a "T". Does it really matter? Ive never had my truck above 80 MPH and see no reason to drive 109MPH ( R rating ). Should I really go for "T" ?

 

It matters up until you get your first nail.

I don't think it matters with your truck. If you are racing it might matter.

T rating is fine. R rating is fine and speed tested up to 106MPH.

https://www.tirebuyer.com/education...ratings-load-indexes-and-service-descriptions

I used to have Z rated tires because I thought I was cool.