AllWeatherJeff

Inner tube. NOT a tubeless setup.

2 inch woodscrew left a small hole. I replaced the innertube and used a Parks Tool emergency tire patch (roughly 2"×4") to cover the hole inside the tire.

However, with the patch installed i get a flat-spot type of vibration/rumble at speeds over 20mph.

There's a lot of tread left on the tire, and replacement tire of the same make and model are out of stock everywhere (Donnelly X'Plor 650x50).

Can the tire be saved and the flat spot remedied with a different type of patch?

Bill Kapaun

IF the flat spot is actually caused by the puncture, the tire is compromised.
With the patch area on the ground, I'd use a piece of tape or similar on the top of the tire (line it up with the fork or something for ref) and ride it to make sure the vibration actually occurs when you think it does.
I'm assuming you have the bead seated evenly.
Tires don't "have" to match.

AllWeatherJeff

The hole inside the tire is really small, but the tire patch is fairly robust so I was assuming that the flat spot was being caused by the patch. I will give your suggestion a try to get a better idea if that is where the flat spot is coming from.



Yeah. I agree. But I really dig the Donnelly's.

If i can't remedy the problem, Ill be switching to a spare set of WTB Horizons until the Donnelly's or the Clemente clones are back in stock.

Thanks for your insight

trailangel

Did you use the Park emergency tire boot? Those are big. I'd take that off and use a much smaller patch on the inside. You need to keep the tube from making a bubble out the screw hole.

gkamieneski

Try using Shoe Goo to fill the hole completely from inside and outside the tire. Then cut a 1in diameter piece of Dupont Tyvek (housing underlayment) and glue it on with a light layer of Shoe Goo inside the tire. Be sure to talc the inside of the tire before reinserting the tube.

Iride01 

Fix or put a new tube in it. If the area around the hole bulges, then I'd consider putting a new tire on it and be done.

If I was spending my fortune trying to keep my bike in tires, then I might try booting or using a really strong reinforced patch on the inside of it. They make stronger patches for car and truck tires.

dabac

A scrap of nylon cloth will work too. I saved a piece of liner when discarding a jacket decades ago. Unless I misplace it, it’ll last me a lifetime.

gkamieneski

I'm sure that would work as well, but the advantage of the Tyvec is how smooth it is when installed. You can guarantee that the tube will slide across it.

dsbrantjr

They also make those thin-but-strong mailing envelopes from Tyvek®.

79pmooney

If you are near a sailmaker, give them a call and ask for some scrap dacron sailcloth. Cloth for a small racing dinghy would be perfect. Cut a large patch (like that Park only now you can tailor it). Glue it in with the good contractor's contact cement. (Before stick-down, make sure the hole is fully closed up.) This repair will last the life of the tire and will not stretch. I've repaired long cuts on 100 psi road tires as young as yours and ridden them to worn out.

Trakhak

This. Grab an envelope at the post office or a FedEx store. I cut up the gummed flaps to carry with my tube repair kit. I always use two thicknesses for cover a tire cut, but one would probably be fine.

dsaul

Just put a regular Rema round tube patch on the inside of the tire. I do that for similar holes in all of my tubeless tires and it has never failed.

AllWeatherJeff

Because I already have the Rema kit, I'm gonna give this a try first. For better effect I'm gonna rotate tires and put the patched tire in front to lighten it's workload.

I've already ordered a new set of the same tires, but I'd like to see if I can get a few thousand more miles out of the current set.

trailangel

Put your best tire on the front

AllWeatherJeff

Interesting.

"Best" as in most tread or least amount of wear? If, so they are fairly evenly worn-- I rotate them about every three months.

Or will the various forces that that tire is subjected to on the front be more strenuous on the patch than if the tire were left on the back? I'm heavier than most cyclists: 6'1" 215lbs.

gkamieneski

He’s saying that if you should have a tire failure, the last place you want it is on the front tire.