Super Cycle might have been a decent game back when it was released in 1986. However, compared to later games like Lotus 2 and F1GP - and even the versions of Enduro Racer and Chase HQ on the 8 bits - it really doesn't stack up well. This came bundled with my STE; I really don't know why they bothered though as with Out Run - not exactly a great game but at least an up to date one - in the same bundle it seemed totally superfluous.
What's wrong with it? I think it's great - exciting gameplay, varied difficulty levels, nice circuits with different handling, with respectable graphics and sound considering the time as well.