What exactly does re-grooveable mean on a tire sidewall?

Yes. you are correct. It means the grooves can be cut deeper. Not many places do this anymore... its just too time consuming and not economically feasible. but he tire was manufactured with a thick enough rubber layer on the outsides to be "re-grooved" and usually an 1/8 to 3/16 of an inch was all people would groove into them when they did re-groove one...

now days it don't stand for much. Cheaper to just replace the tire.

usually once you notice seen cracks on a sidewall this is an indication of a tire that spent years interior the solar, tires dry out by the years, the clarification tire businesses will basically guarantee a tire for as much as six years, is after that it is going to become lots extra risky, and tires take a much extra good beating than people provide them credit for. quite some the cracked tires I ever observed have been on an rv or commute trailer of a few kind, there are covers that help preserve a tire from the solar, that's the significant criminal while it is composed of this. So do no longer examine all the solutions and %. the single you like, as an occasion nick who's dumb adequate to gopersistent on a tire that ought to explode at any time, if this happens and that's on the front of a motor vehicle, you have an stunning risk of flipping your motor vehicle. some years in the past i grow to be driving approximately one hundred yards one lane over at the back of a %. up, he grow to be utilising approximately 60 i spotted the pickup because of fact it grow to be older, yet very superb concern and that i admire previous pickups, nicely unexpectedly there grow to be a noisy BANG!! I observed products of the tire and a few smoke as he lost administration of his %. up. He grow to be fabulous onto the wheel for expensive existence scuffling with to maintain the truck far off from a bridge abutment, and since the truck went during two lanes of site visitors, and then a breakdown lane and into the airborne dirt and dirt, he ignored the abutment, and clipped a small metallic marker on the sting of the line. yet he have been given it stopped. I surely have had different acquaintances with tire issues and that they did no longer hear, the tire does not go flat slowly, like once you get a nail. It explodes and rapidly is going flat, if that happens on the front, usually you roll your motor vehicle. the guy interior the truck grow to be fortunate, and he additionally did an outstanding interest fabulous onto the guidance wheel, I surely have 2 acquaintances i will think of of off hand, plus myself who've had blow outs (mine grow to be on the rear, which factors some margin of administration) yet the two acquaintances had a front blow out and the two flipped on the throughway basically approximately rapidly, attempting to get some extra miles out of a heavily broken tire, should not be well worth your existence, please get some extra powerful tires.