Romain Grosjean enjoyed an encouraging start to his second weekend as an F1 racer after outpacing Renault team-mate Fernando Alonso during Friday practice at Spa.

The young French driver sampled the R29 for the first time in the wet during the first free practice session and posted the 13th quickest time - having failed to venture onto the circuit while conditions were at their best.

In the second dry session however, Grosjean was an encouraging fifth quickest after setting his fastest time late on in the session - leaving him well set for final practice and qualifying on Saturday.

"Today was very interesting as we had wet and dry conditions as is quite normal for Spa," he said. "Once again Fernando has been very helpful and comparing my data with his data really helped me today as I could see where I needed to improve.

"In the afternoon session we concentrated on testing the two types of tyre and I managed to do over 30 laps so I think we are quite well prepared for tomorrow."

Team-mate Alonso ended the day with the 14th quickest time as he worked on tyre development work and the Spaniard was happy with his days work.

"We did quite a few laps today, especially in P2," he said. "In P1 we were affected quite a lot by the rain, but in the afternoon we were able to concentrate on evaluating the tyres and we are happy with the balance we have with the car. Tomorrow it will be an important qualifying session because we are all determined to get a good result this weekend, so most importantly we would like a good grid position tomorrow."