2009 Dodge Challenger SXT / R/T
The 2009 Dodge Challenger SXT / R/T tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2009 Dodge Challenger
Tire geometry â 235/55R18
The 235/55R18 fitted to the 2009 Dodge Challenger has a section width of 235mm and an aspect ratio of 55%, mounted on a 18-inch rim. That gives a sidewall height of 129.3mm (5.09") and an overall outside diameter of 715.7mm (28.18"). At highway speed this tire completes roughly 445 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2009 Dodge Challenger while keeping the speedometer accurate, target a 245/48R19 (plus-one). For a softer ride or winter setup, a 225/63R17 (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 2009 Dodge Challenger uses a 5x115 bolt pattern with a 71.5mm hub bore. Safe rim width range for the OEM tire is 7.0J â 8.0J, and offsets in the ET19 â ET29 window will clear suspension and fender without rubbing on most setups.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2009 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) |
|---|---|---|---|
| SXT / R/T | 235/55R18 | 18" x 7.5 | ET24 |
Frequently Asked Questions
What tire size does the 2009 Dodge Challenger SXT / R/T use?
The 2009 Dodge Challenger SXT / R/T uses 235/55R18 tires as standard equipment.
What is the bolt pattern of the 2009 Dodge Challenger SXT / R/T?
The 2009 Dodge Challenger SXT / R/T has a 5x115 bolt pattern with a center bore of 71.5mm.
What is the wheel offset of the 2009 Dodge Challenger SXT / R/T?
The 2009 Dodge Challenger SXT / R/T has a wheel offset of ETET24.