Cadillac Drawing: Body Proportions and Wheel Placement

Object Drawing Lessons

This lesson teaches a repeatable method for drawing a Cadillac car body with convincing proportions and wheel placement. You will use a simple unit system based on the car's overall length, mark wheel centers and body landmarks, and then refine the silhouette. The approach works for a side view and can be adapted to a three-quarter view. All measurements are relative, so you can scale the drawing to any paper size. A convention is defined for judging proportions: use the wheel diameter as one unit, and compare all major distances to that unit. Lettering and handwriting are not part of the drawing score; any legible labels are acceptable. The goal is a clear, balanced car drawing, not a perfect replica of a specific model year.

Practice materials: Printable downloads are not available for this lesson yet. Use the instructions and four exercises below.

Reference illustration

Use the stated measurements and conventions for each exercise.

Set a unit and mark the overall length

Choose a wheel diameter as your unit. On your paper, decide a wheel diameter that fits comfortably, for example 2 cm, and label it as a hypothetical example. Draw a light horizontal baseline for the ground. Mark the front and rear limits of the car body along the baseline. A typical Cadillac side-view length is about 5.5 to 6 wheel diameters, but treat this as a starting guide, not a rule. Measure your own chosen length and write it down.

Place the front and rear wheel centers on the baseline. The distance between wheel centers is the wheelbase. For a large sedan, a wheelbase of about 3.5 to 4 wheel diameters is a reasonable starting point. Mark the centers lightly, then draw vertical centerlines through them. These lines will anchor the wheel arches and the body mass.

1. Draw a light ground line and mark a wheel diameter unit.
2. Mark the front and rear body limits using about 5.5 to 6 units.
3. Mark the front and rear wheel centers using a wheelbase of about 3.5 to 4 units.
4. Draw vertical centerlines through both wheel centers.

Build the body mass around the wheels

The body sits between the wheels and extends beyond them. Draw a light rectangle from the front body limit to the rear body limit, with its bottom edge just above the wheel centers. The roof height is usually about 2.5 to 3 wheel diameters above the ground line for a sedan. Mark the beltline, the lower edge of the side windows, at roughly 1.5 to 1.8 units above the ground. These are starting proportions; adjust them to match the Cadillac style you want, such as a longer hood or a more upright cabin.

Place the wheel arches. Each arch should be centered on a wheel centerline and slightly wider than the wheel. Draw a light curve from the body bottom edge over each wheel. The front arch often sits slightly higher than the rear arch on a Cadillac, but keep both arches consistent with your chosen unit. Check that the body does not cut through the wheels; the wheels should sit inside their arches with a small gap.

1. Draw a light body rectangle between the front and rear limits.
2. Mark the roof height at about 2.5 to 3 units above the ground.
3. Mark the beltline at about 1.5 to 1.8 units above the ground.
4. Draw wheel arches centered on each wheel centerline.
5. Check that each wheel sits inside its arch with a small gap.

Refine the Cadillac silhouette

Cadillac styling often includes a long hood, a crisp beltline, and a relatively upright cabin. Use your landmarks to shape the hood, windshield, roof, and trunk. The hood can run from the front body limit to the base of the windshield, roughly one-third of the body length. The cabin can occupy the middle third, and the trunk the rear third. These fractions are guides; adjust them to suit the angle and style you are drawing.

Draw the wheels as circles or ellipses using the wheel diameter unit. Add a smaller inner circle for the hub and a few spokes if desired. Keep the wheel centers on the baseline and the wheel bottoms touching the ground line. For a three-quarter view, perspective makes the near wheels appear larger and the far wheels smaller; use the wheel-diameter unit for the near wheel and scale the far wheel proportionally to its apparent depth, keeping all wheel bottoms on the ground line.

1. Shape the hood, windshield, roof, and trunk using the beltline and roof height.
2. Draw the wheels using the wheel diameter unit.
3. Keep wheel bottoms on the ground line and centers on the baseline.
4. Add simple hub and spoke details without changing the wheel size.

Check proportions and placement

Use a simple check: measure the wheel diameter on your drawing and compare it to the body length, wheelbase, roof height, and beltline. If any measurement is far from your planned values, adjust the light guide lines before darkening the final lines. A valid drawing can use different proportions, but the relationships should be intentional and consistent. The rubric rewards clear wheel placement, balanced body mass, and a recognizable Cadillac-like silhouette, not exact numerical matching.

For handwriting or labels, use any legible style. X-height is measured from the baseline to the midline of lowercase letters, and letter styles vary. Labels are optional and do not affect the drawing score. If you add a title or notes, keep them outside the car body so they do not interfere with the proportions.

1. Measure the wheel diameter and compare it to body length and wheelbase.
2. Check roof height and beltline against your planned units.
3. Adjust light guides before finalizing lines.
4. Keep any labels outside the car body and legible.

Worked example

A side-view Cadillac drawing uses a wheel diameter of 2 cm. The body length is 11 cm, the wheelbase is 7.5 cm, the roof height is 5.5 cm, and the beltline is 3.2 cm above the ground. Check the proportions in wheel-diameter units and state whether they are reasonable starting values.

Four practice exercises

Common mistakes

• Drawing wheels too small or too large relative to the body. Set one wheel diameter unit first and use it for all wheel and body comparisons.
• Placing wheel centers too close together or too far apart. Mark the wheelbase as about 3.5 to 4 wheel diameters and check it before drawing arches.
• Letting the body cut through the wheels. Draw wheel arches centered on the wheel centerlines and leave a small gap around each wheel.
• Making the roof too tall or too flat for a Cadillac-like sedan. Use a roof height of about 2.5 to 3 wheel diameters as a starting guide, then adjust intentionally.

Self-check rubric

• Wheel placement: both wheels sit on the ground line with centers on the baseline and a small gap inside the arches.
• Body proportions: body length, wheelbase, roof height, and beltline are consistent with the chosen wheel-diameter unit.
• Cadillac silhouette: the drawing shows a long hood, crisp beltline, and upright cabin that read as a Cadillac-style sedan.
• Line quality: guide lines are light and final lines are clear; labels, if any, are legible and outside the car body.
• Valid alternatives: different proportions are acceptable if they are intentional, consistent, and clearly explained by the unit system.

Questions and answers