Interesting....I had these gross red itchy rashes on my arm last summer while training for IMAZ. After IMAZ, they went away and I took a long break from the bike. Started riding the bike again, and as soon as the temperatures started hitting triple digits again, the rash came back. Anyone else have this happen? Is there a home remedy for it, or do I have to wear arm covers in the blistering heat???
could be something in the bike tape (adhesive?) instead of covering your arms, try covering the tape (ie washcloth, thin cloth) etc and see if it goes away...if it does, then I'd look into different bike tape