'Grattan Raceway Park is located in Belding, Michigan just minutes away from Grand Rapids, Michigan. The picturesque road course is 2 miles long with several unique and challenging corners. It is considered to be one of the finest courses in America. Some of its features include a 3,200 foot straightaway, a 160 degree hairpin turn and a downhill reverse camber turn. If you can master Grattan, you can race anywhere.'
I once read a comment from a driver that said "..the designer either loved or hated drivers.", when he was asked about his thoughts on the layout of Grattan Raceway.
Grattan holds many events from Karting to Sport Bike, SCCA and vintage car rallies because of its never ending twists, turns, elevation changes and best of all reverse cambers. Yes, there is more than one.
It's size and layout seem best suited for mid-sized cars. Megane, Clio, Lupo, Rhez, Trainers, Toyota Atlantic, BMW 320i, VW, etc. Too much power and you may have a hard time keeping your wheels on the track. There are no rumble strips and the asphalt is quite aged and rough. If you touch the grass, you may stay there for a while, if you make it back at all. There are few guardrails, except for the front straight, and only one sand trap, to keep you from going into the county road.
Here is what you can expect from this tough little track.
T-1. Uphill entry, blind exit to flat.
T-2. Blind entry, slight reverse camber, slight elevation drop.
T-3. Steep downhill entry, reverse camber corner, uphill exit.
T-4. Uphill entry, negative g corner, blind downhill exit.
T-5. Downhill entry after - !!blind, slight left turn bunny hop in straight!!, hard right uphill exit. !!Negative g's on the car mid hop/left!!
T-6. Tight uphill entry. Asphalt uneven at apex. Non-typical exit line to enter 7.
T-7. Hard uphill entry. Negative g.Blind long exit downhill.
T-8. 'Bowl' corner. Downhill entry, heavy camber corner, uphill exit.
T-9. Blind entry. Long sweeping downhill.
T-10. Uphill entry hairpin, with blind entry and exit. !! DO NOT BRAKE LATE !!
Between 10 and 11 is a flat stretch leading to a 'ramp' up to, and over, if you go to fast, turn 11. The crest of the ramp goes flat immediately into the turn.
T-11. Negative g, usually get a little air-time. If you do, you may not make 12.
T-12. Slight downhill to the straight. Hopefully you set up 11 correctly on entry so you are still on the track.
So, after about 1:20-30 of racing you get about 8-10 sec. of rest, before you do it all over again.