Loading…
Lexington, OH
Live motorsport conditions at the circuit
Temperature
67F
Humidity
58%
Wind
5 mph
Pressure
1013 hPa
Density altitude
669 ft
Track surface
64F
No public description is available for this track.
Precipitation
none
Alerts
0
“Your goal in adjusting the camber angle is to maximize cornering grip by having the tire close to 0-degree camber during hard cornering. When a tire leans over, part of the tread is no longer in contact with the track, drastically reducing traction.”
Ultimate Speed Secrets — Ross Bentley
Mid-Ohio's off-camber Esses tilt the track surface away from the car, pushing the outside tire toward positive camber and reducing the contact patch exactly when grip is most needed. Bentley's camber principle means you need more static negative camber than at a flat track to compensate for the surface tilt. Check tire wear across the tread after each session — uneven wear across the Esses section reveals camber issues.
“In decreasing-radius corners, the more gentle arc in the first part of the corner often puts the turn-in point past the point where the road curves. Since it is a long way between turn-in and the throttle application point, it is likely that you will use constant-level braking and turning.”
Going Faster! — Carl Lopez (Skip Barber)
The Keyhole at Mid-Ohio is a classic decreasing-radius corner that punishes early commitment. Lopez's constant-level brake-turning technique is essential: maintain moderate brake pressure through the initial wide arc as the radius tightens, delaying throttle application until the car is rotated and the radius opens again. Rushing the throttle application in a decreasing-radius corner causes understeer that compounds as the corner tightens.
“A driver's braking analysis should include the following: braking point location and consistency, total braking distance and braking distance consistency, quickness in building up maximum deceleration, how hard the driver is braking, and brake pressure modulation to compensate for changes in friction between the tires and track surface.”
Analysis Techniques for Racecar Data Acquisition — Jorge Segers
Mid-Ohio's heavy braking zones into T1 and the Thunder Valley chicane are ideal corners for Segers' braking analysis methodology. With data acquisition, compare your braking point consistency lap to lap — the hilly terrain and camber changes make it easy to brake at slightly different points each lap. The telemetry will reveal whether you are building to maximum deceleration quickly enough, and whether your brake pressure modulation adapts to the grip changes between the flat and off-camber sections.
Find HPDE organizers, car clubs, and sanctioning bodies that run events at Mid-Ohio Sports Car Course.