Hello all. I'm running 6 ST718 245/70/19.5 "F" load, 3 year old Sumi tires on a Class A, 21,500# 35' Itasca. The tires have less than 1,000 miles on them. We are low-mileage rv'ers, and generally replace tires about every 6 years due to age, not wear, 2 at a time.
I've had some erratic readings with my tpms, so while in storage, I took the sensors off to test them at home. I made the mistake of not putting caps on the valve stems, and about 2 weeks later when I returned to the storage lot, I found my front left tire completely flat, and it had popped the bead. I assume it must have leaked at the valve with no cap
I first tried to set the bead and air the tire with no luck. I am concerned for safety, so I decided just to remove the wheel and take it to a tire shop and replace the tire. I don't know if this is really necessary, but with the tire was so smashed, I thought it best.
I called around for a replacement, but found that the ST718 is no longer made in that load range/size. They now make the ST719. The differences are that the ST719 is a G-rated 14 ply tire, vs the ST718 F-rated 12 ply tire. Dimensions are all basically the same, within 1/10".
I assume I can't mix the two model tires, so I guess my options are to (1) replace just the one tire with a different brand, but with the same specs, assuming I can find one; (2) repla
ce the 2 two tires with the newer ST719 Sumi. However, when it comes time to replace the rears, would I need to replace all 4 at one time, rather than 2 at a time? (3) Other options? I can't afford to be extravagant, but would like to get good, safe tire(s).
Any thoughts would be appreciated!