Early years

After starting in racing through karting in his home land of Belgium in 1986, he drove in the Benelux Formula Ford Championship. He was champion in his second year in the series in 1991. In 1992 he raced in Great Britain, with a drive in the British Formula Ford Championship, finishing fourth on points. He finished as runner-up in the 1993 Formula Opel Euroseries, before returning to Britain with Formula 3. He finished as runner-up again, moving to race a part season in the 1995 German Formula 3 Championship a year later. In 1997 he switched to saloon cars, racing in the Belgian ProCar Championship. He finished third on points driving a Peugeot 406. In 1998 he changed his car to a Peugeot 306, ending the season in fifth place.

BTCC

In 1999 he got a drive in the British Touring Car Championship with the successful Volvo works team in a Volvo S40. He replaced Gianni Morbidelli in the team, who had a poor year in 1998, alongside defending champion Rickard Rydell. In a year of mixed fortunes including five podiums, he finished the championship in eighth place. With half the manufacturers leaving the BTCC in 2000, including Volvo, Radermecker found himself with a seat in the Vauxhall Team. It was not a good year for him, as the third driver in the team behind Yvan Muller and Jason Plato. He finished in tenth place, the lowest placed works driver.

He was set to return to the BTCC during the 2001 Season in a Lexus IS200 but this never happened. (https://www.autosport.com/btcc/news/round-up-abg-targets-radermecker-5051311/5051311/)

Return to Belgium

With the end of the Super Touring era in the BTCC, he returned to the 2001 ProCar Championship in Belgium. He won the series driving an Opel Astra. He finished second in the French Super Touring Championship in 2002. On return to Belgium in 2005, he won the Belgian Touring Car Championship.

Recent years

Radermecker driving the Maurer Motorsport Opel Astra TCR at the Red Bull Ring during the 2022 TCR Germany Touring Car Championship season.

Since 2004 he has driven in selected races in the FIA GT Championship, in various cars including a Nissan 350 Z, a Corvette C5R and a Mosler MT 900. In 2008 he drove a Ferrari 430 GT3 for Exagon Engineering, as well as a full season in the Belgian GT Championship. He has also done some Touring Car racing, winning the 2006 ADAC Procar Series in Germany, combined with selected rounds of the 2006 World Touring Car Championship with Maurer Motorsport. He returned to the WTCC at the Zolder round in 2010.

Complete British Touring Car Championship results

(key) (Races in bold indicate pole position – 1 point awarded all races) (Races in italics indicate fastest lap) (* signifies that driver lead feature race for at least one lap – 1 point awarded)

‡ Retired before second start of race

Complete World Touring Car Championship results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

Complete 24 Hours of Spa results

Year	Team	Co-Drivers	Car	Class	Laps	Pos.	Class Pos.
1995	Honda Team ZVM	Damien van de Poele Hervé Maillien	Honda Civic	Procar	?/Cardan joint	DNF	DNF
1996	Renault Belga Team	Thierry Bouillon Eric Quadedpeerds	Renault Clio 16V	Spa 1.6	?/Fixing	DNF	DNF
1998	Peugeot Belgique	Thierry van Dalen Frédéric Bouvy	Peugeot 306 GTi	SP	?/Non-regulatory entry	DNF	DNF
2000	Peugeot Team Belgique Luxembourg	Jeffrey van Hooydonk Eric van de Poele	Peugeot 306 GTi	SP	?/Gear selector	DNF	DNF
2004	RJN Motorsport	Neil Cunningham Chris Buncombe Carl Rosenblad	Nissan 350Z	N-GT	49/Brakes	DNF	DNF
2006	PSI Experience	Pertti Kuismanen Markus Palttala Bernard Delhez	Chevrolet Corvette C5-R	GT1	530	11th	7th
2007	Gravity Racing International	David Dermont Olivier Muytjens Loris de Sordi	Mosler MT900R	G2	448	22nd	2nd
2008	Exagon Engineering	Eric Hélary Daniel Desbruères Catherine Desbruères	Ferrari F430 GT3	G3	31/DNF	DNF	DNF
2009	Gravity Racing International	Ho-Pin Tung Loris de Sordi Jacques Villeneuve	Mosler MT900R	G2	65/DNF	DNF	DNF
2010	Gravity Racing International	Romain Grosjean Diego Alessi Ron Marchal	Mosler MT900R	GTN	466	16th	3rd
2014	Belgian Audi Club Team WRT	Jean-Luc Blanchemain Christian Kelders Frédéric Bouvy	Audi R8 LMS	Pro-Am	506	20th	9th

TCR Spa 500 results

Year	Team	Co-Drivers	Car	Class	Laps	Pos.	Class Pos.
2019	AC Motorsport	Mathieu Detry Stewart Lines Stéphane Perrin	Audi RS 3 LMS TCR	PA	439	5th	2nd