Do they?

Not sure about mineral spirits specifically, but I think most solvents/oils damage tires. Back in the day I saw many bulged sidewalls on rear tires - probably careless chain cleaning/oiling had to do with that.

Yes, but not so fast that you'd have to worry if you kept the exposure pretty short.

You should ask the manufacturer, but my take is that mineral spirits will probably soak into a tire if the tire is immersed, and would swell the rubber a bit, but this should be reversible as the mineral spirits are volatile and would diffuse out and evaporate after removal from the mineral spirits. Tire rubber is cross-linked (that is, its a thermoset), and shouldn't just dissolve. If you have tubulars, the min spirits might make the rim tape a bit more like grease than glue and (having some experience in this) going over the bars after your tire slides off the rim into the brakes is no fun.

People spill gasoline (which contains mineral spirits and even more aggressive solvents) on auto tires all the time, with no big harm.

You could test an old tire you are about to discard. Wash it really well, and use a 3M scrubbit pad to make sure any loose stuff is removed. Let it dry. Put a min spirit-soaked paper towel on the dry tire for 10 minutes. Look for visible swelling. Rub with a clean white towel. Is the rubber coming off onto the towel? If not, you're ok.

In sum, I'm pretty sure that a minor spill of min spirits on a tire, if wiped off quickly and allowed to dry, will not hurt the tire. But check.

Yes.

Depending on the tire compound, they can turn the rubber into goo, or dry it out and crack it. Sometimes both on one tire.

Assuming you're asking about overspray of Boeshield, rather than intentionally applying it to your tire.

I've noticed where I've picked up oil on my tires, 303 Protectant will clean it. There is no solvent carrier in this cleaner and it's safe to apply to your tires on purpose.

I decided to try to keep my drivetrain clean by squirting a bit (about a half-ounce) or mineral spirits between the cogs of the cassette daily, just before a ride. After the sidewall of a previous tire failed otherwise unaccountably, I leaned the bicycle towards the derailleur side to prevent any dripping onto the tire. My last tire (both Panaracer Pasela PTs, a model I've used before) failed after 14 months (short), cracking and bulging, the tread not all worn away. I can't imagine what else could have caused this. The front, the same model, is in better shape.

I ride the bicycle immediately after applying the MS and don't put the tire in the little bit that makes it to the pavement. (I keep the MS in the bed of my pickup, in the driveway)

From first hand experience it does not damage tires. I manage to go through some soft hot asphalt on my Wilier about 2 years ago and had tar all over my tires, brakes, bike, a real mess. And to top that off I had to go on the side of the road with grass clippings and weeds that then managed to stick to everything. In other words my bike was tar-and-feathered big time.


Got home and removed the wheels, brakes, tires, and tubes. Clean the entire bike with mineral spirits and had to really clean my Conti GP 4000 2's with stuff. I had to wipe and wipe the tire over and over to get rid of all the tar. In the end the OMS did the trick, it got the bike completely clean including the rims and tires. I put the tires back on and got my usual 5000-6000 miles on the Conti's.

Test , tie off a short section of old inner-tube with Bailing wire { reduce the volume) and fill it with Mineral spirits, and Watch it over time.





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I'd think the the excess, and there would be a lot, would get flung off the cogs and onto every thing else. Which is why i tell folks to never lube a chain while it is spinning. Most of what you put on gets flung off, onto the frame, tires, rims, spouse, pets, floor, etc.

It you want to clean between your cogs, use some string or twine like dental floss.

cassette cleaning floss .. to simply Buy .. Finish Line - Bicycle Lubricants and Care Products - Gear Floss? Microfiber Rope

It's not as bad on new tires, but I try to avoid getting any solvents on tires.

Used to be getting some triflow on a gumwall would turn it to goo really quickly.

But it certainly varies depending on the solvent and the tire and the manufacturer.