Hail can damage a vehicle starting at around 1 inch in diameter, roughly the size of a quarter. Below that threshold, most vehicles resist significant denting, though soft metals and aluminum panels may show minor damage at slightly smaller sizes. Above 1 inch, damage severity escalates rapidly with each size increment.

This guide covers every hail size from pea to softball, what damage each causes, and what repair looks like for each scenario.

What Size Hail Damages Cars? Quick Reference

• Pea size (¼ inch): Minimal to no denting on most vehicles
• Marble size (½ inch): Possible minor denting on very soft panels and aluminum
• Dime size (¾ inch): Light denting on soft panels, soft aluminum hoods
• Quarter size (1 inch): Confirmed denting threshold, most vehicles sustain dents
• Half dollar size (1.25 inch): Significant denting across multiple panels
• Golf ball size (1.75 inch): Heavy damage, possible paint cracking and glass risk
• Baseball size (2.75 inch): Severe damage, structural deformation possible, glass damage likely
• Softball size (4 inch): Catastrophic body damage, vehicle may be totaled

Pea-Size Hail (¼ inch)

At pea size, hailstones have limited mass and terminal velocity. Most modern vehicles, with steel body panels at standard gauge thickness, do not sustain visible dents from pea-size hail. Exceptions include:

• Very thin aluminum panels (some hoods on luxury and truck models)
• Panels that have been previously repaired and have thinner metal from work
• Older vehicles with body panel degradation

If you’re outside during pea-size hail, don’t panic. Your car is almost certainly fine.

Marble and Dime-Size Hail (½ to ¾ inch)

At this size, energy transfer begins to create light denting on softer or thinner panels. Hoods, particularly aluminum hoods on trucks and SUVs, and roof panels may show minor dents. Steel doors and quarter panels typically hold. After a storm with marble or dime-size hail, check your hood and roof in angled light, look for subtle surface distortion, not deep dents.

Damage at this size, if present, is usually repairable with PDR at a lower cost than larger hail events.

Quarter-Size Hail (1 inch), The Damage Threshold

Quarter-size hail (1 inch diameter) is widely considered the threshold at which most vehicles sustain visible, assessable dent damage. At this size:

• Steel door panels, quarter panels, and trunk lids sustain visible dents
• Hoods and roof panels, especially aluminum, take more pronounced hits
• Multiple dents per panel are common, depending on storm duration and intensity
• Trim pieces may sustain impact marks

Quarter-size hail events produce the most insurance claims in the US because the damage is consistent and widespread. A vehicle caught in a quarter-size hail storm for 10+ minutes will typically have 50–200 dents across the full surface. PDR is the standard repair method, all dents at this size are PDR candidates assuming intact paint.

Half Dollar Size Hail (1.25 inches)

Significant damage across all panel types. At this size:

• Multiple distinct dents per panel across doors, hood, roof, and trunk
• Soft body lines and character lines may be affected
• Antenna bases, mirror housings, and plastic trim often sustain marks
• Windshield may sustain minor edge chips if glass is old or already compromised

Repair scope: full vehicle PDR. Expect 1–3 days of repair time depending on vehicle size and technician count. Insurance claim strongly warranted.

Golf Ball Size Hail (1.75 inches)

Golf ball hail is the point where damage becomes severe and the risk of paint cracking and glass breakage becomes real:

• Heavy denting across all exposed panels, sometimes 500+ dents per vehicle
• Dents may be deep enough that metal has stretched, making some areas PDR-difficult
• Paint cracking at dent peaks is possible on older or non-flexible paint finishes
• Windshield breakage and side window damage are a real risk at and above this size
• Grille, headlight bezels, and soft plastic components may crack

Repair scope: full vehicle PDR where paint is intact, supplemented by traditional bodywork where paint has cracked and glass replacement where needed. Repair time: 3–7 days. Almost always an insurance claim.

Baseball Size and Larger (2.75 inches+)

At baseball size, vehicles in the storm path sustain what the insurance industry terms ‘severe’ hail damage:

• Metal deformation, not just dents but actual panel structure distortion
• Multiple glass breakages expected, windshield, rear glass, possibly side windows
• Roof panel may require traditional repair or even replacement if metal has stretched beyond PDR ability
• Vehicles may be declared total losses at this hail size, particularly older or lower-value vehicles

At this level, get a professional assessment before making any repair decision. Insurance claim is standard.

How to Tell If Hail Damaged Your Car

After any hail event of ¾ inch or larger, inspect your vehicle this way:

In direct sunlight: Walk around the vehicle and look across each panel at a low angle. Surface distortion shows as irregular shadow patterns across panels.

Under overhead lighting (garage): Same low-angle inspection. Light sources above and to the side of the panel reveal contour distortion.

Feel the panels: Run your hand across hoods, roofs, and doors. Even dents too subtle for naked-eye detection are felt easily on smooth metal.

Check soft panels first: Aluminum hoods and roofs show damage before steel doors. If the hood is dent-free, the doors almost certainly are too.

How to Get Hail Dents Out of Your Car

For hail denting at quarter-size and above, professional PDR is the correct repair method in virtually all cases where paint is intact. PDR:

• Removes all PDR-eligible dents to factory-original condition
• Preserves factory paint and vehicle value
• Is typically covered by comprehensive insurance
• Is far faster than traditional body shop repair

Oh Wow Auto Hail Repair provides free mobile hail assessments, we come to your vehicle, inspect every panel under professional PDR lighting (which reveals damage invisible in ambient light), and provide a full written estimate. If you’ve recently been through a hail event, get an accurate assessment before deciding whether to file an insurance claim.