If 100% accurate mileage is a concern of yours then I wouldnt do it, but if you have no intentions of selling the bike and reporting accurate mileage, then by all means.....If you do it then just be aware that you should disclose the information to the next owner, should you choose to sell it.But how bad is it to take the bike out when the odometer does not count the millage? Is it a big no no?