2020 Chrysler 300C tire sizes & fitment
Approved tire and wheel sizes for the 2020 Chrysler 300C, sourced from manufacturer fitment data and refreshed monthly.
Approved fitments
| Tire size | Rim size | PCD (bolt pattern) | Offset | Load index | Speed rating |
|---|---|---|---|---|---|
| 245/45R20 OEM | R20 | N/A | N/A | N/A | N/A |
Best by use case
Four tires, four jobs
See the best tires for the Chrysler 300C, ranked by category →
Tire recalls & safety complaints for the Chrysler 300C →
Compatible alternative sizes for 245/45R20
Sizes within the ETRTO ±3% overall-diameter safe-fit tolerance. Each row links to the size's own page.
| Alternative size | %Δ OD | Category | Verdict |
|---|---|---|---|
275/40R20 |
-0.07% | wider | Safe |
245/40R21 |
0.12% | plus 1 | Safe |
245/50R19 |
-0.12% | alternative | Safe |
225/60R18 |
-0.18% | alternative | Safe |
225/55R19 |
0.22% | winter narrower | Safe |
For the full list of alternatives with comfort/handling impact, see 245/45R20 upsize options. To check an arbitrary size pair, use the tire compatibility calculator.
Check a different size against this vehicle
Type any tire size below; we'll compute its overall-diameter delta against the OEM 245/45R20 and verdict using the ETRTO ±3% rule.
Common upgrade paths
- Plus-1: 245/40R21; one rim size up, 0.12% OD change. Sharper steering, mild ride penalty, modest cost premium.
- Plus-2: 245/35R22; two rim sizes up, 0.25% OD change. Noticeable ride penalty, higher pothole risk, meaningful tire-cost premium.
Use the plus-size calculator to evaluate any rim step against the OEM size.
How to choose tires for the 2020 chrysler 300C RWD
The 2020 Chrysler 300C RWD ships from the factory on 245/45R20 tires mounted on R20 wheels. Only one approved fitment is documented for this model year, so replacement options should match the original size exactly unless a plus-size upgrade is being considered. The Compatible alternative sizes table above lists every safe substitution within the ETRTO ±3% overall-diameter tolerance.
Tire choice on the Chrysler 300C comes down to three trade-offs that matter more than brand loyalty: load index (must equal or exceed the OEM number), speed rating (must match or exceed the placard), and UTQG treadwear (higher means longer life, lower usually means stickier rubber). Owners replacing factory tires with the same compound class, for example all-season for all-season, generally see no change in ride characteristics or fuel economy. Switching categories (performance summer to all-season touring, for example) is where the trade-offs show up at the contact patch.
For 2020 Chrysler 300C RWD owners considering a plus-size upgrade, the safer option is a Plus-1 step (one rim size up with a 10-point aspect drop and ~10 mm of additional section width). Plus-2 is technically viable on this chassis if the alternative-sizes table lists a Plus-2 candidate within tolerance, but expect a meaningful ride-harshness penalty and a tire-cost premium of 30–60% per tire relative to the OEM fitment. For winter use the recommended pattern is one width step down (e.g. from a 235 to a 225) with the aspect ratio bumped up to preserve overall diameter; narrower tires apply higher contact pressure per square inch on snow, which translates directly into shorter braking distances. The plus-size calculator evaluates any specific rim step against this OEM size.
Before purchasing, verify the tire size on the driver-door placard of your specific 2020 Chrysler 300C RWD, since trim levels and option packages can shift the original fitment from what is documented here. The placard reading is the authoritative source per FMVSS 110, and dealers will reference the placard rather than aftermarket catalogs when validating warranty claims.
NHTSA-reported issues for 2020 chrysler 300C
Top issue category: Tires (General)
Most reported: Tires (General) (9) · TPMS (2)
Reported across: 2005 – 2010 (4 years)
What owners described
Pressure-monitoring (TPMS) fault appears in 27% of these reports; about 11.4× as often as across all tire complaints. Percentages are shares of the 11 reports covering every model year of the Chrysler 300C that include a written account; a single report can describe more than one problem, so they do not total 100%.
| Reported problem | This subject | All tire complaints | Relative |
|---|---|---|---|
| Pressure-monitoring (TPMS) fault | 27% | 2% | 11.4× |
| Sidewall failure | 9% | 15% | 0.6× |
| Cracking or dry rot | 9% | 9% | 1.0× |
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Chrysler 300C. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
GOT READY TO TAKE KIDS TO THE DOCTOR AND THE TIRE WAS FLAT. MANAGED TO GET THE TIRE AIRED UP WITH COMPRESSOR AT HOUSE AND TOOK TO A MECHANIC TO CHECK TO SEE IF THE TIRE WAS PUNCTURED. TURNS OUT NO PUNCTURE. DECIDED TO REPLACE TIRE IN CASE OF "DRYROT", WHEN TIRE WAS TAKEN OFF, THE RIM WAS CRACKED. HAD TO BUY ANOTHER RIM. 2 MONTHS LATER, ANOTHER RIM DID THE SAME THING. NOW WE'VE HAD A THIRD RIM CRACK. THESE ARE THE STANDARD FACTORY RIMS THAT THE VEHICLE ROLLED OF THE PRODUCTION FLOOR WITH.
DRIVERS REAR TIRE SUDDENLY LOST AIR PRESSURE WHILE ON THE FREEWAY, WENT TO GAS STATION AND WHILE ATTEMPTING TO PLACE AIR IN THE TIRE IT BLEW IN MY FACE, INNER SIDEWALL SEPARATED AT SEAM WITH 18 INCH GASH. THE TIRES WERE ON MY CAR LESS THE 5 MONTHS & HAD LESS THAN 2,000 MILES. LOOKING AT YOUR SITE I SEE MULTIPLE COMPLAINTS OF SAME THING HAPPENING TO OTHERS. THE TIRE IS NOT AVAILABLE NATION WIDE AND PER MICHELIN CUSTOMER SERVICE ON BACK ORDER WITH NO PRODUCTION DATE AVAILABLE. I HAVE 3 MORE OF THESE TIRES ON MY CAR AND DO NOT FEEL SAFE DRIVING ON THESE TIRES AFTER REVIEWING THE COMPLAINTS ON YOUR SITE.
CONTI SEAL TIRE DOESN'T SEAL ITS SELF. A STAPLE LODGED IN TIRE, TIRE LOSING AIR, TOOK TIRE IN FOUND STAPLE AND REMOVE IT. TOLD ME IT WAS A SELF SEALING TIRE AND THEY WERE UNABLE TO DO ANY THING, TIRE SHOULD SEAL ON ITS OWN. TIRE DOES NOT SEAL AIR LOSS DAILY, HAVE TO REFILL DAILY. TIRE HAS LESS THAN 7000 MILES, AND IS ON A BRAND NEW CAR. I AM CONCERNED FOR MY SAFETY NOW THAT I KNOW THESE TIRES ARE DEFECTIVE, AND DO NOT PERFORM AS ADVERTISED.
TPM (TIRE PRESSURE MONITOR) LIGHT KEEPS COMING ON, WITH A CORRESPONDING BELL RING, EVERY TIME I USE THE CAR AND OFTEN AGAIN WHILE DRIVING. DEALER HAS SPENT COUNTLESS HOURS AND MANY VISITS ATTEMPTING TO REPAIR SAME WITH NO SATISFACTORY RESULTS. A CALL TO CHRYSLER'S COMPLAINT LINE SUGGESTED THAT I INFLATE THE TIRES WITH NITROGEN! SINCE THE AIR IS 78% NITROGEN TO BEGIN WITH, I FAIL TO SEE HOW THAT WILL HELP. IN ANY EVENT A PROBLEM HERE WHICH SEEMS TO BE A CHRYSLER FAULT DEALER CAN'T RESOLVE AND THE PROBLEM IS ONGOING.
Complaints are voluntarily submitted to the NHTSA Office of Defects Investigation and are not verified by NHTSA; they represent owner-reported problems, not proven defects. Counts can be useful as a relative quality signal across comparable tires or vehicles.
Frequently asked questions
What size tires fit a 2020 Chrysler 300C?
Can I run a different tire size on my 2020 Chrysler 300C?
Where can I buy tires for my 2020 Chrysler 300C?
What is the recommended tire pressure for the 2020 Chrysler 300C?
Can I fit winter tires in a different size on my 2020 Chrysler 300C?
How often should I rotate the tires on my 2020 Chrysler 300C?
For broader tire questions; replacement timing, UTQG, EV-specific tires, winter swaps; see the tire FAQ.
Sources for this page
- Vehicle owner's manual tire & wheel placard; door-jamb placard on the Chrysler 300C is the authoritative source for OEM tire size, load index, and cold-inflation pressure for your specific trim.
- NHTSA SaferCar; recall lookup for the 2020 Chrysler 300C.
- ETRTO 2024 Standards Manual §2.3; overall-diameter math used for the alternative-size verdicts above.
- Tire & Rim Association 2025 Yearbook; load-index to maximum-load reference.
Last verified 2026-09-02.