About Us

With over 23 years providing honest advice and top quality repairs for Hamilton and the surrounding area, you can trust our team at D.I.M.M.S.

D.I.M.M.S was established 23 years ago and is currently owned and operated by husband and wife team, Doug and Karen Tierney. Doug opened the doors to the workshop in 1992 with the focus of providing top quality service and reliable repairs to his customers. In 2000, this business focus saw the popularity of D.I.M.M.S. grow rapidly and the business moved to its current location on Andrew Street. 15 years on from the move, we are still going strong, keeping our workshop updated with the latest tools and equipment, and our staff skilled with the latest training. Doug is supported by qualified mechanics Graeme Torney, Ken Crozier and apprentice Matthew Pitman. With over 80 years combined experience on our side, you can trust the team at D.I.M.M.S.

"We strive to go the extra mile for our customers, providing a free drop off and pick up service for the local area. Visit our workshop today at 4 Andrew Street, we're more than happy to provide advice and discuss any repairs with you" - Doug Tierney.
If you'd like to find out more, or you'd like to arrange a booking, contact us today.

Doug Tierney

Doug began his automotive career in 1980 at the age of sixteen at Slorach Auto in Hamilton. 1987 Doug left the automotive trade briefly, and worked for the local council’s parks and gardens.

After 5 short years, Doug had missed the tools and automotive industry, so in 1992, he opened his own business, - “Doug’s Industrial Mower and Mechanical Service”, mechanic work on week days and industrial mowing jobs on weekends.

Later, Doug sold the industrial mowing side of the business to focus on the automotive component of his company. Starting as a one man show, Doug has grown DIMMS into a successful business, servicing and repairing local vehicles for over 23 years. Doug has no intention of slowing down anytime soon.

Graeme Torney 

Graeme joined the DIMMS team in March 2013 with over 38 years of knowledge and experience from working at the local Holden dealership. Graeme started his career at Slorach Auto, in 1975. He witnessed the company change owners, names, and the build of the vehicles dramatically evolve.

Over that time, Graeme has learnt a wealth of experience and knowledge, and has become a valued member of the DIMMS team.

Matthew Pitman

Matthews career in the automotive industry has mainly consisted of working behind the desk. After years of working in spare parts Matthew wanted to see the other side of the industry and returned to DIMMS as there apprentice mechanic in January 2016.

Matthew looks forward to learning and growing as part of the DIMMS team.


Ken Crozier

Ken joined the DIMMS team in March 2016 with over 40 years of knowledge and experience in the automotive industry.

Ken started his career as an apprentice for the local shire. In that position he experienced working on various types of machinery from small motors to large graders. He has continued that trend, working on all types of machinery from mowers to cranes, planes and automobiles

Ken is looking forward to continuing the high standard of service and maintenance as a member of the DIMMS team.