I was riding in the rain a few months ago and fell turning a 90° corner. Here are the details:
- Riding on a road bike with new 25mm smooth tires inflated to 100 psi (Cannondale Synapse with Continental Gatorskins inflated to 690 kilopascal)
- It had been raining for at least an hour, but was not raining hard at the time of the fall
- There was no obvious oil or other liquids around, no dirt or other substances
- There was no strong wind and the temperature was well above freezing
- I was coasting at about 10 mph (16 km/h) around a corner on smooth asphalt
- I weigh 210 lbs (95 kg)
- I fell to my inside, right side
- The fall was immediate with no dramatic skidding or sliding
Here is a photo of the corner, with a red square where I slipped:
I was surprised to discover that the smooth tires are not particularly the culprit in my fall, as bicycle tires for on-road use have no need of any sort of tread features; in fact, the best road tires are perfectly smooth, with no tread at all.
(Edit: Per multiple comments and answers, the above link is not specific to wet surfaces and the assertion that no tread is optimal does not apply here. It appears treads should help with wet surfaces.)
I live in a desert climate so I haven't had much experience with slippery roads, and none since that accident. Is there anything I could have done to avoid falling, or do I simply need to avoid any wet, asphalt surfaces?