The 2009 Jeep Trucks Grand Cherokee sits at an interesting point in the model’s history, blending SUV utility with a broader spread of street, touring, and high-performance personalities depending on trim. That matters because this Grand Cherokee does not rely on one universal tire size across the lineup. Radial fitments range from 245/65R17 and 245/60R18 on Laredo, Limited, and Overland models to a staggered 255/45R20 front and 285/40R20 rear setup on the SRT8. Available tire choices also vary by brand, sidewall treatment, and series. The right decision starts with confirming the exact sub-model and wheel diameter already on the vehicle.
Which Tire Size Is Right for The 2009 Jeep Trucks Grand Cherokee
Four tire sizes apply to the 2009 Jeep Trucks Grand Cherokee, and they are tied to sub-model and wheel diameter rather than one universal setup. The first step is identifying whether the vehicle is a Laredo, Limited, Overland, or SRT8, then confirming whether it uses 17-inch, 18-inch, or 20-inch wheels. Once that is settled, the real comparison becomes tire character, sidewall presentation, and product style within the correct radial size.
245/65R17 is a metric radial size in which 245 is the section width in millimeters, 65 is the aspect ratio, R identifies radial construction, and 17 is the wheel diameter in inches. On the 2009 Jeep Trucks Grand Cherokee, this size serves the more conventional SUV fitments rather than the SRT8 performance setup. The available product in this size uses an RWL sidewall and an All Terrain TA KO2 series design from BFGoodrich. This size is the one to evaluate when the vehicle has 17-inch wheels and the goal is maintaining the correct overall fitment category for that configuration.
245/60R18 follows the same metric radial format, with a 245-millimeter section width, a 60-series profile, radial construction, and an 18-inch rim. This size appears on certain 2009 Jeep Trucks Grand Cherokee Limited and Overland applications, so it is not shared across every sub-model. Its slightly lower profile than a 245/65R17 makes wheel confirmation especially important before selecting a replacement. This is the size to focus on when the vehicle carries the 18-inch wheel package and the buyer wants to stay with the proper fitment family for that setup.
255/45R20 is a metric radial performance size, with 255 millimeters of nominal section width, a 45-series profile, and fitment for a 20-inch wheel. On the 2009 Jeep Trucks Grand Cherokee, this size belongs to the SRT8 front position rather than the standard SUV trims. Product choices include BFGoodrich, Nitto, and Pro-Trac options, along with Blackwall, RWL, and Redline sidewall treatments across several tire series. This is the right size to compare when replacing the front tires on an SRT8 and preserving its staggered 20-inch performance-oriented layout.
285/40R20 is a wider metric radial size that uses a 285-millimeter nominal section width, a 40-series profile, and a 20-inch wheel diameter. For the 2009 Jeep Trucks Grand Cherokee, this size is used at the rear of the SRT8, making it part of a staggered front-to-rear arrangement rather than a square setup. Its role is different from the 255/45R20 front size, so it should not be selected simply because the wheel diameter matches. Buyers should confirm rear SRT8 fitment carefully and maintain the intended front and rear size relationship when replacing tires.
Sub-model fitment matters on the 2009 Jeep Trucks Grand Cherokee because tire size changes across the lineup and even becomes staggered on the SRT8. Identifying the exact trim is the first step before comparing products, since the correct tire depends on both sub-model and wheel diameter.
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2009 Jeep Trucks Grand Cherokee Laredo
The 2009 Jeep Trucks Grand Cherokee Laredo uses a single radial tire fitment, which keeps replacement selection relatively straightforward once the existing wheel setup is confirmed. The main decision here is choosing a tire that matches the correct size and suits how the vehicle is actually used on the road.
The 2009 Jeep Trucks Grand Cherokee Limited can use either a 17-inch or 18-inch radial tire fitment, so wheel diameter needs to be verified before anything else. Tire selection depends on matching the vehicle’s actual wheel package rather than assuming every Limited uses the same size.
The 2009 Jeep Trucks Grand Cherokee Overland also spans two radial fitment paths, making wheel confirmation essential before selecting a replacement tire. Once the 17-inch or 18-inch setup is established, the choice becomes more about staying within the proper size and intended driving character.
The 2009 Jeep Trucks Grand Cherokee SRT8 Front uses a dedicated 20-inch radial front size that is separate from the rear. Tire replacement should respect that staggered arrangement and focus on front-position fitment, available sidewall styles, and tire-series differences within the correct size.
The 2009 Jeep Trucks Grand Cherokee SRT8 Rear uses its own wider 20-inch radial rear size, distinct from the front SRT8 tire. That makes rear replacement a matter of confirming the proper staggered setup and avoiding the common mistake of treating the SRT8 like a square four-corner tire application.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2009 Jeep Trucks Grand Cherokee Tires for Sale
Available products focus on 245/65R17 and 255/45R20, with BFGoodrich, Nitto, and Pro-Trac choices represented. Buyers can compare all-terrain versus street-oriented series along with Blackwall, RWL, and Redline sidewall treatments depending on the size and sub-model being replaced.
These FAQs focus on the exact tire sizes used on the 2009 Jeep Trucks Grand Cherokee, including sub-model differences, wheel-diameter checks, SRT8 staggered fitment, available sidewall choices, and practical inspection points before road use.
Tire Size & Fitment
What tire size fits a 2009 Jeep Trucks Grand Cherokee?
The 2009 Jeep Trucks Grand Cherokee uses four possible tire sizes: 245/65R17, 245/60R18, 255/45R20, and 285/40R20. Laredo uses 245/65R17, Limited and Overland can use either 245/65R17 or 245/60R18, and the SRT8 uses a staggered setup with 255/45R20 in front and 285/40R20 in the rear.
The key is matching the tire to the exact trim and wheel package already on the vehicle. A Grand Cherokee with 17-inch wheels does not use the same tire as one with 18-inch wheels, and an SRT8 should be checked as a front-and-rear pair rather than treated like a single-size application.
What size rim does a 2009 Jeep Trucks Grand Cherokee use?
A 2009 Jeep Trucks Grand Cherokee can use 17-inch, 18-inch, or 20-inch rims depending on sub-model and tire size. The 245/65R17 tire fits a 17-inch rim, the 245/60R18 fits an 18-inch rim, and both 255/45R20 and 285/40R20 fit 20-inch rims on the SRT8.
Wheel diameter should be confirmed before choosing any replacement tire, especially on Limited and Overland models that may appear similar but use different fitments. It also helps to confirm wheel width and actual wheel type if the vehicle has been changed from stock, since a correct diameter alone does not settle every fitment question.
Do all 2009 Jeep Trucks Grand Cherokee sub-models use the same tire size?
No, the 2009 Jeep Trucks Grand Cherokee does not use one tire size across all sub-models. Laredo uses 245/65R17, Limited and Overland can use either 245/65R17 or 245/60R18, and the SRT8 uses 255/45R20 front and 285/40R20 rear.
That variation means trim name alone is not always enough; wheel diameter still needs to be checked on Limited and Overland models. The SRT8 needs even more attention because it uses a staggered arrangement, so front and rear tires should be identified separately before comparing brands, sidewall styles, or tire series.
Choosing the Right Tire
What should I consider when choosing a tire for a 2009 Jeep Trucks Grand Cherokee?
Start with the exact tire size that matches the vehicle’s trim and wheel diameter, because this Grand Cherokee uses several different fitments across the lineup. After that, compare construction details within the correct size, along with rim-width compatibility where stated, tire weight, load figures, and whether the tire’s character suits SUV, street, or performance use.
Appearance can also matter, especially on the 255/45R20 SRT8 front size where Blackwall, RWL, and Redline treatments are available. A useful final check is confirming whether the vehicle still has its original wheels and suspension setup, since modifications can change what works well even when the size code itself looks familiar.
What sidewall styles are available for 2009 Jeep Trucks Grand Cherokee tires?
Sidewall style depends on the tire size being replaced. The available 245/65R17 option uses an RWL sidewall, while 255/45R20 choices include Blackwall, RWL, and Redline treatments. That gives the SRT8 front fitment more visual variety than the 17-inch application represented here.
Sidewall style does not change the need to stay with the proper tire size for the vehicle’s actual wheel setup. It is best used as a finishing choice once size, wheel diameter, and intended use are settled, particularly on a Grand Cherokee where one trim may call for a practical SUV look and another a more performance-oriented presentation.
What brands offer tires for the 2009 Jeep Trucks Grand Cherokee?
Available tires for the 2009 Jeep Trucks Grand Cherokee include BFGoodrich, Nitto, and Pro-Trac across the applicable sizes represented here. BFGoodrich appears in both the 245/65R17 and 255/45R20 fitments, while Nitto and Pro-Trac are present in the 255/45R20 performance-oriented SRT8 front size.
Brand choice is only one part of the decision, since series design and sidewall style can matter just as much once the proper size is confirmed. On a Grand Cherokee, that is especially true when comparing a utility-focused 17-inch fitment against a 20-inch SRT8 front tire meant for a very different driving and visual character.
Restoration & Appearance
How does tire construction affect the appearance of a restored 2009 Jeep Trucks Grand Cherokee?
The 2009 Jeep Trucks Grand Cherokee uses radial tires, so staying with the correct radial size maintains the intended modern SUV or performance-era look of the vehicle more naturally than trying to force an unrelated vintage-style alternative. Appearance differences within the correct fitment come more from wheel diameter, tire profile, and sidewall treatment than from construction changes.
That makes trim-specific fitment especially important on a restoration-minded vehicle. A Laredo on 245/65R17 presents differently from an SRT8 on staggered 20-inch tires, and available sidewall choices such as Blackwall, RWL, or Redline can further shape the finished look without changing the need to preserve the proper size family.
Does correct tire fitment matter for a 2009 Jeep Trucks Grand Cherokee restoration?
Yes, correct tire fitment matters because the 2009 Jeep Trucks Grand Cherokee used different tire sizes depending on trim and wheel package. A restoration-oriented approach should begin by confirming whether the vehicle is a Laredo, Limited, Overland, or SRT8, then matching the appropriate 17-inch, 18-inch, or staggered 20-inch setup.
Getting that foundation right helps preserve the vehicle’s stance and overall presentation instead of mixing sizes from a different version of the Grand Cherokee. When exact originality is important, owners should also compare the vehicle against authoritative model-specific references so sidewall style and wheel choice support the intended look as closely as possible.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 Jeep Trucks Grand Cherokee?
Yes, modifications can affect tire fitment on a 2009 Jeep Trucks Grand Cherokee even when the vehicle still appears to use a familiar size. Aftermarket wheels, changes in wheel width or offset, suspension alterations, and body-height changes can all influence how a 245/65R17, 245/60R18, 255/45R20, or 285/40R20 tire sits and clears.
That is especially important on the SRT8, where front and rear sizes are already different. A smart check includes confirming actual wheel diameter and width, then looking for steering, fender, and suspension clearance before mounting replacements, particularly if the vehicle has been lowered or changed from its original wheel package.
What should I inspect before driving a 2009 Jeep Trucks Grand Cherokee on new tires?
Before driving, inspect the tires for proper inflation, confirm that each tire matches the correct size for the vehicle’s trim and wheel position, and look over the wheels for damage or irregular wear patterns. It is also wise to verify that front and rear tires are placed correctly on an SRT8, since that model uses different sizes at each end.
A quick road-use inspection should also include checking for adequate clearance at full steering lock and over suspension movement. After the first miles, monitor air pressure and watch for vibration, rubbing, or uneven wear, since those early signs can point to wheel, balance, alignment, or fitment issues that need attention.
How should tires on a 2009 Jeep Trucks Grand Cherokee be maintained?
Tires on a 2009 Jeep Trucks Grand Cherokee should be maintained with regular pressure checks, visual inspections for cuts, cracking, bulges, and uneven tread wear, and routine attention to any gradual air loss. Maintenance also means keeping the correct front and rear sizes in place on an SRT8 rather than assuming all four positions use the same tire.
Low-use vehicles deserve extra attention because age and storage conditions can matter as much as tread depth. Clean, dry storage away from prolonged sunlight and ozone sources helps preserve tire condition, and periodic inspections remain important even when the Grand Cherokee is driven only occasionally or seasonally.
