|
Largest Tire Table:
-
| Measurement in inches | First Gen
1967 - 1969 | Second Gen
1970 - 1981 | Third Gen
1982 - 1992 | Fourth Gen
1993 - 1995 |
|---|
| Diameter | Rim | Front | Rear | Front | Rear | Front | Rear | Front | Rear |
|---|
| 15" Dia | Backspacing | 3.75 | 4.875 | 3.75 | 4.0 | 4.75 | 4.0 |
|
|
| Rim width | 7.0 | 8.5 | 7.0 | 8.0 | 7.0 | 8.0 |
|
|
| Tire | 225/55 | 28x10.5 | 225/55 | 245/50 | 245/50 | 265/50 |
|
|
| 16" Dia | Backspacing | 5.0 | 5.5 - 5.75 | 4.0 | 5.5 | 5.5 | 5.5 | 5.75 | 5.75 |
| Rim width | 8.5 | 8.5 | 8.0 | 9.5 | 9.5 | 9.5 | 8.0 | 8.0 |
| Tire | 245/50 | 255/50 | 245/45 | 245/50 | 255/50 | 255/50 | 245/50 | 245/50 |
| 17" Dia | Backspacing | 5.0 | 5.5 - 5.75 | 4.0 | 5.5 | 5.5 | 5.5 | 7.0 | 7.75 |
| Rim width | 8.5 | 9.5 | 8.0 | 9.5 | 9.5 | 9.5 | 9.5 | 11.0 |
| Tire | 245/40 | 275/40 | 245/40 | 275/40 | 275/40 | 275/40 | 275/40 | 315/35 |
| Other | Backspacing | 5.0 | 5.75 |
|
|
|
| 7.0 | 7.75 |
| Rim width | 20x9.5 | 20x9.5 |
|
|
|
| 18x9.5 | 18x11.0 |
| Tire |
|
|
|
|
|
| 275/40 | 295/35 |
Data from "Chevy High Performance" measured data (Jan 2002) and real experiences. Stock ride height.
Wheel well openings, ride height, tie rod ends (front), sway bar (limits front turn) and upper A-arms (1st and 2nd gen front) are the greatest constraints on tire and wheel size.
By using smaller tubular upper A-arms, one can gain some clearance on first and second generation Camaros.
Wheel Rim Terms:
- Pilot: Diameter of center hole which fits over hub or axle.
- Rim Diameter: Diameter measured from the bead seat.
The CamaroTech project car uses a 17 inch rim diameter.
- Rim width: Width measured between rim flanges.
The CamaroTech project car uses a 9.5 inch rim width.
- Bead Seat: Position where tire rests on inside of wheel rim to seal air.
- Center line: One half of rim width.
- Back Spacing: Distance from extreme back edge of rim (not bead seat) to mounting pad.
- Offset: Distance of mounting pad from center line. Zero offset is a mounting pad located on the center line. A negative offset is one where the mounting pad is located inboard of the center line (wheel sticks out). A positive offset
positions the mounting pad outboard of the centerline.
The CamaroTech project car uses a 10 mm positive offset.
- Bolt Cirdle: Diameter of an imaginary circle drawn through the center of each lug hole or stud.
Tire Terms:
- Aspect Ratio: Ratio of the tire's cross section height to the cross section width.
Calculation: AR = (Height/Width) x 100
- Section Height: Vertical distance between the tire's bead seat and the the outer tread surface for a mounted and inflated but unloaded tire.
- Section Width: Tire's width from sidewall to sidewall when mounted and inflated but unloaded.
- Deflection: Difference between the tires natural radius and the loaded radius.
- Tread Width: Distance of the inner to the outer edge of the tread.
Metric Tire P-Sizes:
For example: P275-40ZR17
- P: Passenger car tire.
- 275: Section width in millimeters.
- 40: Aspect Ratio
- Z: High speed rated
- R: Radial construction
- 17: Wheel rim diameter
Wheels:
The lighter the better. A lighter wheel will lower the unsprung weight allowing
the wheel to follow the bumps in the road.
The lower wheel weight will lower the wheel momentum which will allow the
suspension spring to press the wheel back upon the road after a bump and thus
will improve road contact and thus will improve traction.
After Market Performance Wheel Manufacturers:
Links:
Tires:
|
The 1982-1992 Camaro can fit P275-40ZR17 tires on all four corners without
wheel well or sway bar modifications.
After Market Performance Tire Manufacturers:
|
|
Suppliers:
Accessories:
Wheel and Tire Trade Associations:
|
|
