Originally Posted by
taras0000
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1) Aero wheel covers are not legal for track use.
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In the USA wheel covers are allowed for Cycling USA races per rule 1I1(b) --- [
http://www.usacycling.org/usa-cycling-rule-book.htm]
There may be no protective shield, fairing, or other device on any part of the bicycle, which has the effect of reducing air resistance except that spoke covers may be used.
If you do not live in the USA maybe your cycling body also has a similar rule.
Occasionally I see riders with wheel covers but as noted in other responses I do not believe they provide any significant benefit.