The 2012 Buick Trucks Enclave sits in the early three-row crossover era, blending full-size family practicality with the quieter, more upscale road manners Buick buyers expected. It is a substantial vehicle, so tire choice matters not just for appearance but for ride quality, wheel fitment, and everyday drivability. This Enclave uses radial tires in two primary sizes, 255/60R19 and 255/55R20, tied to different wheel diameters. The decision is less about vintage-style construction and more about confirming which wheel package is on the vehicle before comparing tire options. For a stock Enclave or one that has seen wheel changes, exact size and rim verification should come first.
Which Tire Size Is Right for The 2012 Buick Trucks Enclave
The 2012 Buick Trucks Enclave uses two primary tire sizes, and the correct choice depends first on wheel diameter. One fitment is a 255/60R19 radial for 19-inch wheels, while the other is a 255/55R20 radial for 20-inch wheels. Since both sizes appear on the Enclave Base, the key step is confirming which wheel package is actually on the vehicle before selecting a tire.
255/55R20 is a metric radial size in which 255 identifies the nominal section width in millimeters, 55 is the aspect ratio, R denotes radial construction, and 20 is the rim diameter in inches. On the 2012 Buick Trucks Enclave, this size belongs to vehicles using a 20-inch wheel package. Its dimensions place it very close in overall height to the 255/60R19 alternative, but it is still a distinct fitment tied to a different rim diameter. This size should be evaluated when the Enclave is already equipped with 20-inch wheels or has been set up to retain that configuration.
255/60R19 is a metric radial size where 255 is the nominal section width in millimeters, 60 is the aspect ratio, R indicates radial construction, and 19 is the wheel diameter in inches. For the 2012 Buick Trucks Enclave, this size is used with 19-inch wheels rather than the 20-inch setup used by the alternate fitment. Its overall diameter is very close to the 255/55R20 size, but that does not make the two sizes interchangeable without matching the correct rim. This is the size to consider when the Enclave carries the 19-inch wheel package and stock-style wheel diameter is being maintained.
Sub-model fitment is straightforward here because the covered Enclave Base can use either of the two primary tire sizes. The important step is not trim identification alone, but confirming whether the vehicle has 19-inch or 20-inch wheels before choosing a tire.
1
2012 Buick Trucks Enclave Base
The 2012 Buick Trucks Enclave Base uses radial tires and appears with both 255/60R19 and 255/55R20 fitments. That means tire selection starts with the actual wheel diameter on the vehicle, followed by confirming that the current setup has not been changed from stock.
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.
Frequently Asked Questions
Owners of a 2012 Buick Trucks Enclave usually need to sort out size, wheel diameter, and stock-versus-modified fitment before anything else. These FAQs focus on the two radial sizes used on this vehicle, plus practical checks for selection, maintenance, and road use.
Tire Size & Fitment
What tire size fits a 2012 Buick Trucks Enclave?
The 2012 Buick Trucks Enclave uses two primary tire sizes: 255/60R19 and 255/55R20. Both are radial tires, and each one belongs to a different wheel diameter. A 19-inch wheel uses 255/60R19, while a 20-inch wheel uses 255/55R20.
The practical difference is that this is a wheel-package decision, not a matter of choosing whichever size seems close. Start by reading the tire sidewall already on the vehicle and confirming the wheel diameter. If the Enclave has had aftermarket wheels installed, verify the actual rim size before ordering replacement tires.
What size rim does a 2012 Buick Trucks Enclave use?
A 2012 Buick Trucks Enclave uses either a 19-inch or 20-inch rim, depending on which tire size is on the vehicle. The 255/60R19 tire fits a 19-inch rim, and the 255/55R20 tire fits a 20-inch rim. Both are legitimate Enclave fitments.
That makes rim confirmation the first fitment check, especially on a used vehicle. Do not rely on trim name alone if the wheels may have been changed. The quickest way to avoid a mismatch is to compare the tire sidewall size, the actual wheel diameter, and the current setup on all four corners before selecting replacements.
Why does the 2012 Buick Trucks Enclave have more than one tire size?
The 2012 Buick Trucks Enclave has more than one tire size because it was fitted with different wheel diameters. One setup uses 255/60R19 and the other uses 255/55R20. Both are radial fitments and both appear on the Enclave Base configuration.
Even though the two sizes are very close in overall diameter, they are still tied to different rims. That means the right replacement depends on the wheel package actually installed on the vehicle today. A careful owner should confirm wheel size first, then check for any prior wheel or suspension modifications that could affect replacement choices.
Choosing the Right Tire
What should I consider when choosing a tire for a 2012 Buick Trucks Enclave?
Start with the correct primary size for the wheel package on the vehicle. A 2012 Buick Trucks Enclave uses either 255/60R19 or 255/55R20, and both are radial fitments. Choosing the wrong rim diameter is the most common way to get off track.
After size is confirmed, compare the tire's intended use with how the Enclave is driven. Daily road use, ride expectations, and any prior wheel changes all matter. It is also smart to look at the condition and matching size of the other tires, since replacing one size with another is not a substitute for proper wheel and fitment verification.
How do I choose between the available 255/60R19 and 255/55R20 tires for a 2012 Buick Trucks Enclave?
The choice between 255/60R19 and 255/55R20 is determined by the wheel diameter already on the 2012 Buick Trucks Enclave. A 19-inch wheel takes 255/60R19, and a 20-inch wheel takes 255/55R20. These are not alternate sizes for the same rim.
Once the wheel diameter is verified, compare replacement tires within that exact size rather than treating the two fitments as interchangeable. It helps to inspect whether the current wheels are original-style or aftermarket, because a previous owner may have changed the setup. Matching the tire to the wheel first keeps the rest of the selection process straightforward.
How do I choose between the available tires for a 2012 Buick Trucks Enclave if the vehicle has been modified?
A modified 2012 Buick Trucks Enclave should still be matched to the actual wheel and tire size on the vehicle, not only to the original fitment range. The two primary sizes are 255/60R19 and 255/55R20, but suspension changes or aftermarket wheels can affect which replacement makes sense.
Measure and confirm the current wheel diameter before making any decision. It also helps to inspect for reduced fender clearance, steering interference, or uneven tire wear that could point to changes in alignment or ride height. On a modified Enclave, the safest path is to verify the present setup carefully rather than assuming stock fitment remains unchanged.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2012 Buick Trucks Enclave?
Yes, modifications can affect tire fitment on a 2012 Buick Trucks Enclave. Aftermarket wheels, suspension changes, or ride-height adjustments can alter the wheel diameter, clearance, and the tire size that is currently on the vehicle. That matters because the Enclave's primary fitments are split between 19-inch and 20-inch wheels.
A close visual check is worthwhile before replacing tires on any used or modified example. Look at the sidewall size, inspect clearance around the fenders and steering components, and confirm that all four wheels match. Even when a vehicle started with one of the original Enclave sizes, later changes can shift what needs to be verified before purchase.
What should I inspect before driving a 2012 Buick Trucks Enclave on new tires?
Before driving a 2012 Buick Trucks Enclave on new tires, confirm that the tire size matches the wheel diameter and that all lug hardware is properly secured. It is also important to inspect for obvious issues such as sidewall damage, air loss, or uneven wear on the tires being replaced.
A broader check should include wheel condition, valve stems, and basic clearance at full steering lock. Pay attention to suspension wear if the old tires showed irregular tread patterns, since new tires can reveal underlying alignment or component problems quickly. A short, cautious road test helps confirm that the setup feels stable and free from rubbing or vibration.
How often should tires on a 2012 Buick Trucks Enclave be inspected?
Tires on a 2012 Buick Trucks Enclave should be inspected regularly, not only at replacement time. A routine visual check for cracking, cuts, bulges, embedded debris, and uneven tread wear helps catch issues early. Pressure should also be monitored consistently, especially if the vehicle sees mixed seasonal use or long gaps between drives.
Inspection becomes even more important on an older crossover that may have seen wheel swaps or suspension wear over time. Looking over the tires before longer drives can help uncover slow leaks, age-related deterioration, or clearance problems that were easy to miss in normal use. Consistent checks are one of the simplest ways to protect ride quality and fitment confidence.
