Win rate0.0%
Podium rate50.0%
Average finish (when classified)avg P7.0
4 pts · Poles 0
1 of these races have no result in the official data; their results come from the Italian Wikipedia.
| 1958 | Isle of Man | 3 +4 | ||
| 1958 | Spa | 11 |
As of round 17 Race · updated 10/13/2026, 07:18 PM (Japan time)
Riders
Geoffrey Tanner
No freely licensed photo found, so the race number and team colour are shown instead. About photos
- Nationality
United Kingdom
Birth date and place from the official rider profile
Career
Made a Grand Prix debut in 500cc at Ulster in 1956.
Read more
In 500cc (1956–1957): 2 starts, 0 wins, 0 podiums. In 350cc (1958): 1 starts, 0 wins, 1 podiums.
First podium: Isle of Man 1958 (350cc).
In all, 3 Grand Prix starts, 0 wins and 1 podiums (within the official results database).
Written automatically from the official results database (no opinions about the rider)
Season by season
500cc350cc ★ Champion
The strip shows each year's team (team colour). Tap for team and machine
Scope: official results DB, 1956–1961 (the rider's racing years)
Totals
Win rate0.0%
Podium rate0.0%
Average finish (when classified)avg P5.7
6 pts · Poles 0
2 of these races have no result in the official data; their results come from the Italian Wikipedia.
| 1956 | Ulster | 4 +3 | ||
| 1957 | Ulster | 4 +3 | ||
| 1959 | Assen | 9 | ||
| 1961 | Hockenheim | DNF |
Points are counted per class, never added across classes. Tap a number for the list of races | Scope: official results DB, 1956–1961 (the rider's racing years)
Against the greats, and the class of their debut
Grand Prix debut in 1956. Of the 49 riders who debuted that year, 0 also raced in 2026.
Greats: 2+ world titles or 30+ MotoGP / 500cc wins. Up to 4 who shared 10+ races, most titles first. A finisher counts as ahead of a non-finisher.
Results by condition (races)
All classes 6 races · 350cc / 500cc
By circuit (best average first)Small sample
Isle of Man350cc 1avg P3.0
Ulster500cc 2avg P4.0
Assen500cc 1avg P9.0
Spa350cc 1avg P11.0
Hockenheim500cc 1—
Isle of Man350cc 10%(0 wins)
Ulster500cc 20%(0 wins)
Assen500cc 10%(0 wins)
Spa350cc 10%(0 wins)
Hockenheim500cc 10%(0 wins)
Isle of Man350cc 1100%(1 podiums)
Ulster500cc 20%(0 podiums)
Assen500cc 10%(0 podiums)
Spa350cc 10%(0 podiums)
Hockenheim500cc 10%(0 podiums)
Average finish across classes (Moto3, Moto2, MotoGP and so on together). See each class below for class-only figures. Only circuits with 3+ races count as a best track.
500cc 4 races · 1956–1961
By circuit (best average first)Small sample
Ulster2 racesavg P4.0
Assen1 racesavg P9.0
Hockenheim1 races—
Ulster2 races0%(0 wins)
Assen1 races0%(0 wins)
Hockenheim1 races0%(0 wins)
Ulster2 races0%(0 podiums)
Assen1 races0%(0 podiums)
Hockenheim1 races0%(0 podiums)
500cc: all in the Multiple suppliers era; no track-condition records; no grid records.
350cc 2 races · 1958
By tyre eraSmall sample
Win rate
Podium rate
Average finish (when classified)
By circuit (best average first)Small sample
Isle of Man1 racesavg P3.0
Spa1 racesavg P11.0
Isle of Man1 races0%(0 wins)
Spa1 races0%(0 wins)
Isle of Man1 races100%(1 podiums)
Spa1 races0%(0 podiums)
350cc: no track-condition records; no grid records.
Fewer than 30 races: small sample (dashed). Average finish counts classified finishes only | Scope: official results DB, 1956–1961 (the rider's racing years)
Every race
No season as a regular (starting at least half of the races)
? How the estimate is made
Estimate = average of the last 3 races before each absence
Seasons in which at least half of the races were started | Scope: official results DB, 1956–1961 (the rider's racing years)