Continental GP 4 Season Tires at 2300 miles
In my post, here, back in September, about nothing being idiot proof, I noted that I got over 2300 miles before I got my first flat with the 28c Continental Grand Prix 4 Season tires I run on my commute bike. Well, this morning, I had two more flats. The first was waiting for me when I went to get the bike – it’d had full pressure at 10PM last night. I changed the tube and replaced the spare. Mentally, I noted that the tube damage looked similar to the September flat. Hmm. About 15 miles into the commute, the tire suddenly went flat as I was headed north on Katy Road on the Keller/Fort Worth border. It was about three doors north of the tank, shown here. I was really glad I’d replaced the spare!Sure enough, when I got the tire off, I found tube damage identical to the first two flats. All three were caused by failure of the rim strip at one of the spoke holes (these rims have recessed spoke nipples, being semi-aero). Before installing the spare tube, I took a “no glue patch” and stuck it over the rim strip failure location. These rim strips are the type intended for use with a tubeless tire conversion, not the Velox I normally use.
So, dear readers, my previous report was in error. The tires were blameless at 2300 miles and they remain blameless at 3400 miles. With last weekend’s cyclocross, I took the opportunity to rotate the tires so that wear between the fronts and rears remains equal. At 2300 miles, I estimated the tires would last for 4k-5k miles. Now, I think they’ll last for at least 5k miles. 3400 miles with no tire-related flats seems like a pretty good start to me.
This morning illustrated why having part of the commute in daylight is REALLY nice. First, I wasn’t changing things in the dark, which I would have been doing had this occurred in October. Second, a Good Samaritan living in the next door house made a special trip outside to inquire as to whether I needed help and he even offered to provide a pump. I didn’t need the help, but it was sure nice to hear the offer all the same. I think help offers would be less forthcoming in predawn darkness. Instead, the owner would see some scofflaw out in the dark, acting suspiciously.
And yes, the patch on the rim seems to have done the trick!