2020 Dodge Challenger SRT Hellcat / Demon
The 2020 Dodge Challenger SRT Hellcat / Demon tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2020 Dodge Challenger
Tire geometry â 275/40R20
The 275/40R20 fitted to the 2020 Dodge Challenger has a section width of 275mm and an aspect ratio of 40%, mounted on a 20-inch rim. That gives a sidewall height of 110.0mm (4.33") and an overall outside diameter of 728.0mm (28.66"). At highway speed this tire completes roughly 437 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2020 Dodge Challenger while keeping the speedometer accurate, target a 285/34R21 (plus-one). For a softer ride or winter setup, a 265/46R19 (minus-one) keeps the overall diameter within Âą3% of stock, which is the industry tolerance for ABS and stability control to stay calibrated.
Wheel fitment specs
The 2020 Dodge Challenger uses a 5x115 bolt pattern with a 71.5mm hub bore. Safe rim width range for the OEM tire is 9.0J â 10.0J, and offsets in the ET14 â ET24 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2020 Dodge Challenger is printed on the driver-side door jamb sticker â always defer to that value, not to the maximum pressure printed on the tire sidewall. Check pressure monthly and before long trips; under-inflation by 20% can reduce tread life by 25%.
Fitment Specifications
| Engine & Trim | Tire Size | Rim Size | Offset (ET) |
|---|---|---|---|
| SRT Hellcat / Demon | 275/40R20 | 20" x 9.5 | ET19 |
Frequently Asked Questions
What tire size does the 2020 Dodge Challenger SRT Hellcat / Demon use?
The 2020 Dodge Challenger SRT Hellcat / Demon uses 275/40R20 tires as standard equipment.
What is the bolt pattern of the 2020 Dodge Challenger SRT Hellcat / Demon?
The 2020 Dodge Challenger SRT Hellcat / Demon has a 5x115 bolt pattern with a center bore of 71.5mm.
What is the wheel offset of the 2020 Dodge Challenger SRT Hellcat / Demon?
The 2020 Dodge Challenger SRT Hellcat / Demon has a wheel offset of ETET19.