20×8.5 ET20
Documented Modified1 build
Rear: 20×10 ET40
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5 Wheels on a 2012 Ford Mustang
25 documented builds
Show me evidence about using this wheel size on this exact vehicle year. Documented Modified1 builds are observed use — not universal fit confirmation, not a safe offset range, and not a no-rub guarantee.
Evidence summary
- Documented builds: 25
- Observed range in our build database: ET0 to ET45
- Most frequently documented tire: 255/35R20 (11 builds)
- Axle context: In our build database: 25 as part of a staggered setup; 25 front-only for this size. Rear-only or front-only counts are not treated as square.
Compared with OEM
OEM baseline used for geometry: 19×8.5 ET50
Width vs OEM: same width
Outer edge 18 mm farther toward fender (more outward poke)
Inner edge 18 mm farther from suspension (more inner clearance)
Geometry uses the most frequently documented offset when available. It does not mean the wheel “fits” or “will clear.”
Documented offsets
- ET32 — 2 builds (evidence only — no dedicated page)
- ET0 — 1 build (evidence only — no dedicated page)
- ET20 — 1 build (evidence only — no dedicated page)
- ET35 — 1 build (evidence only — no dedicated page)
- ET45 — 1 build (evidence only — no dedicated page)
- Unknown — 19 builds
Counts include only builds where offset is actually recorded. Missing offsets are not treated as ET0. Linked offsets meet the size+offset evidence threshold.
Tire sizes used with 20×8.5
- 255/35R20 — 11 builds
- 245/35R20 — 2 builds
- 225/35R20 — 1 build
- 275/35R20 — 1 build
Most frequently documented is not a tire recommendation.
Suspension, rubbing, and fender context
Suspension recorded on these builds
- Not recorded — 25
Reported rubbing
- 0 report no rubbing
- 0 report rubbing
- 25 do not record rubbing
Fender modifications
- Rolled: 0
- Pulled: 0
- No trimming recorded: 0
- Other trimming label: 0
- Not recorded: 25
Unknown remains unknown. These counts are descriptive evidence only — not probabilities or clearance guarantees.
Real-world builds
Showing 24 of 25 documented 20×8.5 setups.
20×8.5 ET32
Documented Modified1 build
Rear: 20×10 ET34
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5 ET35
Documented Modified1 build
Rear: 20×10 ET40
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5 ET32
Documented Modified1 build
Rear: 20×10 ET38
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5 ET0
Documented Modified1 build
Rear: 20×10
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5 ET45
Documented Modified1 build
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 245/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 225/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×9.5
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 275/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 245/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×9.5
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10
Tire: 255/35R20
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
20×8.5
Documented Modified1 build
Rear: 20×10.5
- Suspension
- Not recorded
- Rubbing
- Not reported
- Fender
- Not recorded
Compare your own offset
Use the fitment calculator with this vehicle and 20×8.5 as the proposed wheel to see poke and inner-clearance differences vs OEM.
Other documented sizes for this year
Related specs
Modified1 builds are individual observed setups. Vehicle tolerances differ with suspension, alignment, tire shape, ride height, bodywork, brakes, and load.