I'm so sorry if this is an obvious or dumb question.

I've just bought my new trainer. I changed over my nobby tires for a cheap smooth one.

First time on the trainer, I have hunks of rubber on the tension wheel. Not streaks - bits. Husband is worries about a fire hazard.

Is this typical with a new tire, or have I set up something wrong? Too much tension? Bad tire?

Thanks for your help

Melissa