Heavy rain in Goiania has left MotoGP riders wary of a potentially “super dirty” track,  although the true extent of the conditions will only become clear when practice begins on Friday.<br>MotoGP is making a long-awaited return to Brazil after a 22-year absence, with a heavily-renovated Autodromo Internacional Ayrton Senna hosting the second round of the season.<br>However, the race week ...<a class='more' href='https://www.motorsport.com/motogp/news/motogp-riders-wary-of-super-dirty-goiania-track-after-heavy-rain-and-flooding/10806646/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-MOTOGP&utm_term=News&utm_content=www'>Keep reading</a>