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These can be good tires, but you're playing the lottery in buying them. If you get a good one, it makes a great a tire for many terrain types with low rolling resistance and good durability. If you get a bad one, you'll never get to ride a single mile on it, because the sidewalls will leak and the tire will never seal up properly on your rims.
These were my wife's choice of racing tire for 2 seasons, so I've had the chance to install several of them, and I'm at a 75% bad-tire rate. 3 out of every 4 tires has been returned because the sidewalls had large holes in them.
There are other tires on the market with similar performance characteristics that enjoy better quality control. My suggestion is not to play the lottery with the Ralphs. But if you do, buy a pile of them, because only a fraction of them are going to work.
Beware these are junk I have 3 year old used vee rubber tires that I had to set up tubeless for the first time today after these brand new racing ralph evo tires failed to inflate today. They will ruin your day if you buy them to do a tubeless set up. They are impossible to set up luckily I had my vees in the basement that I barely rode as back ups. These are junk I have been able to do tubeless set ups with every other brand of tires. Schwalbes are overrated my last schwalbe wore out very quickly and these were cheap with warehouse deals but now I have wasted my money and its too late to return them.
I'm sure product is fine but buyer beware, the tire I was shipped is not "Tubless Ready" as described, maybe I was shipped the wrong one but I didn't realize it until after I mounted the tire that it does not have the "TR" tag on the sidewall. Make sure to check before its too late and you pay top$$ for a regular $52 tire!!