just received a disc rotor from on one thats in their usual torn to shreds home made packaging which is fine- but they’ve taped it to the packaging so there’s now tape residue all over the back of the disc including the edges where the pads touch it.

Is this an issue?
I’m fairly new to discs but I’m assuming it is!
thanks

Lighter fluid (Ronsonol) will soon clean that off.
Or brake cleaner, I suppose.

IPA should bring it off, or disc brake cleaner from halfords or the like, something that won’t leave an residue behind.

Use an organic solvent such as lighter fuel or petrol to remove the sticky mess with a toothbrush (20p for 2 at Asda and Sainsbury). Then clean again in that solvent.
Dry it, then scrub with abrasive such as Vim or Ajax with water and a scrubbing brush, water rinse and dry.
Any less and you can ruin a pair of brake pads immediately, and a subsequent pair if not fully clean.

I know it’s a faff, but cheaper than new pads.

PaulD

Return it and get a replacement. Why should you have the hassle?

Won’t it help stop you quicker? 🙂

Paraffin should work well.
EDIT: didn’t mean paraffin, I meant meths. Oops.

Return it and get a replacement. Why should you have the hassle?

Surely that’s more hassle than 2 minutes with some meths!?

I’d have thought it’ll clean up very quickly on a muddy ride! I’d give it a quick scrub in hot soapy water and then just ride it!

I use Isopropyl Alcohol from a hardware store, great for cleaning eyeglasses and computer screens too…

IPA and meths will not remove adhesive tape residue very well, especially in disc rotor holes.
It is not a solvent for the glue.
Petrol, diesel, thinners, lighter fuel, white spirit and turpentine will dissolve it tho’.

PaulD

I’d recommend cleaning ANY new rotor before using on the bike. There may be other residues on the disc to prevent corrosion etc whilst in storage.