| Username | Title | Posts | Registration date |
|---|---|---|---|
| rozap_ | Ripened Lemon | 122 | 2019-01-21 |
| RP | Rookie Driver | 1 | 2014-07-10 |
| RP Murphy | Rookie Driver | 5 | 2013-09-21 |
| RP94 | Rookie Driver | 2 | 2022-05-16 |
| rpantaleonmd | Rookie Driver | 0 | 2020-05-17 |
| rparker1983 | Rookie Driver | 4 | 2013-09-11 |
| rpm12motorsports | Rookie Driver | 1 | 2015-12-19 |
| rpmengineering | Rookie Driver | 18 | 2017-08-05 |
| rpnance | Paddock Rat | 27 | 2014-09-11 |
| rpone605 | Ripened Lemon | 208 | 2010-04-19 |
| rr4298 | Paddock Rat | 26 | 2014-12-18 |
| rreal98 | Rookie Driver | 1 | 2021-04-17 |
| rrhill | Rookie Driver | 1 | 2013-05-09 |
| rrivaden | Rookie Driver | 0 | 2019-10-30 |
| RRochacz | Rookie Driver | 4 | 2024-03-21 |
| rrogan7 | Rookie Driver | 1 | 2017-10-18 |
| rrozhon | Rookie Driver | 0 | 2018-01-26 |
| RRRR | Paddock Rat | 50 | 2009-06-10 |
| rs | Rookie Driver | 0 | 2023-05-18 |
| RS22b | Rookie Driver | 1 | 2018-03-20 |
| rsafier | Paddock Rat | 28 | 2009-05-10 |
| rsahunt | Rookie Driver | 1 | 2021-11-14 |
| rsainato | Rookie Driver | 1 | 2014-02-17 |
| RSAmerica1993 | Rookie Driver | 1 | 2015-01-20 |
| RSB | Ripened Lemon | 130 | 2016-08-09 |
| rschmidt3 | Rookie Driver | 4 | 2017-08-30 |
| rscocca | Rookie Driver | 0 | 2019-02-10 |
| rshadburn | Rookie Driver | 0 | 2023-01-21 |
| RSR | Rookie Driver | 15 | 2011-01-20 |
| RTF27 | Rookie Driver | 8 | 2017-02-05 |
| rtgri19 | Rookie Driver | 1 | 2019-08-30 |
| Rtheebs | Rookie Driver | 2 | 2015-10-28 |
| RThodal | Paddock Rat | 85 | 2010-02-08 |
| RTJonesPE | Rookie Driver | 1 | 2020-08-17 |
| rtodd1 | Rookie Driver | 1 | 2020-02-10 |
| rtopher05 | Rookie Driver | 1 | 2012-03-27 |
| rubber2ice | Rookie Driver | 3 | 2019-08-01 |
| Rubber_side_down | Rookie Driver | 2 | 2019-01-03 |
| Rubicon79 | Rookie Driver | 6 | 2018-08-25 |
| Rud | Rookie Driver | 11 | 2014-09-15 |
| rudedog | Rookie Driver | 18 | 2009-04-30 |
| RudolphGTI | Rookie Driver | 1 | 2016-09-12 |
| rufus99 | Rookie Driver | 9 | 2017-05-04 |
| rufusrastus | Rookie Driver | 6 | 2014-07-24 |
| RuggedRadios | Rookie Driver | 2 | 2013-03-26 |
| Ruggerag | Rookie Driver | 1 | 2023-02-24 |
| Rumrunner | Paddock Rat | 66 | 2009-05-01 |
| RUN-NE1 | Rookie Driver | 2 | 2013-01-29 |
| Runnin L8 | Rookie Driver | 9 | 2010-09-18 |
| RUNNOFT | Rookie Driver | 0 | 2021-06-10 |