The 1968 Buick LeSabre came from an era when full-size American cars balanced comfort, presence, and long-wheelbase road manners in a way that still appeals to collectors today. Whether preserved as a family cruiser or restored for weekend use, this Buick depends heavily on getting the tire size and look right. The 1968 Buick LeSabre uses bias-ply tires in 8.45-15 and 8.85-15 sizes on 15-inch rims, so the first step is confirming which setup belongs on the car. From there, the choice centers on overall tire stance and restoration-oriented appearance. Wheel condition, clearance, and the car's actual setup should all be checked before final selection.
Which Tire Size Is Right for The 1968 Buick LeSabre
The 1968 Buick LeSabre uses two primary tire sizes, both in bias-ply construction and both built for 15-inch rims. Because the same sub-model can be associated with either 8.45-15 or 8.85-15, the key step is confirming the wheel and tire setup currently on the car before choosing a replacement. Once that is settled, the decision becomes one of preserving the proper vintage size and selecting the tire presentation that best suits the car.
An 8.45-15 tire is a numeric bias-ply size in which the first number refers to nominal section width in inches and the final number identifies a 15-inch rim. That makes it a traditional full-size American car fitment with the construction and appearance many owners want to retain on a 1968 Buick LeSabre. Bias-ply sizing like this is especially relevant when maintaining a period-style look and road feel. It is the right size to evaluate only after confirming that your LeSabre's existing wheels and prior tire choice were intended for the narrower of the two primary fitments.
An 8.85-15 tire uses the same vintage numeric bias-ply system, with 8.85 indicating a wider nominal section width and 15 identifying the rim diameter. On a 1968 Buick LeSabre, this size keeps the same traditional construction while giving the car a larger primary fitment within the original-style sizing family used here. It is a useful option for owners matching an established wheel-and-tire setup or restoring a car that already carries this larger size. Before choosing it, verify that wheel width, body clearance, and the car's current configuration all support the 8.85-15 fitment.
Sub-model fitment is simple here because the covered LeSabre Base configuration is associated with the same two primary 15-inch bias-ply sizes used across this page. What matters most is confirming which of those two sizes is actually on the car, since replacement choice depends on matching the existing wheel and tire setup.
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1968 Buick LeSabre Base
The 1968 Buick LeSabre Base can use either of the two primary bias-ply tire sizes covered here, both built for 15-inch rims. That means tire selection starts with confirming whether the car is set up for 8.45-15 or 8.85-15, then choosing a replacement that supports the desired vintage stance and appearance.
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
Tire questions for the 1968 Buick LeSabre usually come down to choosing between 8.45-15 and 8.85-15, understanding vintage bias-ply sizing, and confirming wheel fitment before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 1968 Buick LeSabre?
The 1968 Buick LeSabre uses two primary tire sizes: 8.45-15 and 8.85-15. Both are vintage numeric bias-ply sizes and both mount on 15-inch rims, so the car does not have a single universal size across every setup covered here.
The practical step is to confirm which size is already on the car and whether the wheels were set up for that fitment. Since both sizes belong to the same model year and sub-model coverage, owners should check the wheel dimensions, existing tire markings, and available clearance before choosing between the narrower and wider primary size.
What size rim does a 1968 Buick LeSabre use?
The tire sizes associated with the 1968 Buick LeSabre use a 15-inch rim diameter. Both 8.45-15 and 8.85-15 share that same rim diameter, which keeps the main fitment question centered on tire size rather than a change in wheel diameter.
A shared 15-inch rim diameter does not automatically mean every wheel on every car is the same in width or condition. It is still worth checking the actual wheels on the vehicle, especially if the car has been restored, modified, or sitting for years, because tire selection should match the wheel and the car's current setup.
What does 8.45-15 mean on a 1968 Buick LeSabre?
On a 1968 Buick LeSabre, 8.45-15 is a vintage numeric bias-ply tire size. The 8.45 refers to nominal section width in inches, while 15 identifies the rim diameter. It is an older sizing system commonly seen on full-size American cars from this period.
Understanding that format helps separate the tire's width family from the wheel diameter it fits. Buyers used to modern metric sizes should avoid guessing from appearance alone and instead verify the sidewall marking on the existing tire or confirm the intended setup on the car before ordering a replacement in 8.45-15 or moving to 8.85-15.
Choosing the Right Tire
What should I consider when choosing a 8.45-15 tire for a 1968 Buick LeSabre?
Choosing an 8.45-15 tire for a 1968 Buick LeSabre starts with confirming that 8.45-15 is the size the car is actually set up to use. Since the LeSabre can also use 8.85-15, the first decision is matching the established fitment rather than assuming the narrower size belongs on every car.
Once the size is confirmed, focus on whether you want to preserve a traditional bias-ply presentation for restoration-oriented use or general collector driving. Wheel condition, tire age on the car, and available body and steering clearance all deserve a quick check before replacing the tires, especially on a full-size Buick that may have seen changes over time.
What should I consider when choosing a 8.85-15 tire for a 1968 Buick LeSabre?
An 8.85-15 tire is the wider of the two primary sizes used on the 1968 Buick LeSabre, so it should be chosen only after confirming that this is the correct setup for the car. It remains a bias-ply fitment on a 15-inch rim, keeping the vehicle in a traditional vintage tire format.
That wider size can influence the car's stance and the visual balance of a restoration, which is why matching the existing wheel-and-tire combination matters. Before selecting 8.85-15, inspect the wheels, check sidewall markings on the current tires, and make sure the car has adequate clearance if suspension, ride height, or wheels have changed.
How do I choose between the available 1968 Buick LeSabre tire sizes?
The choice between 8.45-15 and 8.85-15 on a 1968 Buick LeSabre comes down to which primary size belongs on your specific car. Both are bias-ply 15-inch fitments, so this is not a matter of changing rim diameter but of matching the vehicle's intended tire width family.
A good approach is to inspect the tires currently on the car, confirm the wheel size, and review whether the car has original-style wheels or later changes. Owners aiming for a restoration-oriented appearance may also care about how each size fills the wheel opening, but that visual goal should still follow proper size confirmation first.
Restoration & Appearance
Which tire should I choose for a period-style 1968 Buick LeSabre?
For a period-style 1968 Buick LeSabre, the starting point is staying with one of the two original-style bias-ply sizes used on the car: 8.45-15 or 8.85-15. Both preserve the vintage numeric sizing format and the construction style that suits a late-1960s full-size Buick's traditional look.
The key is choosing the size that matches the car's established setup rather than selecting by appearance alone. If exact restoration authenticity matters, confirm the intended tire specification through marque references, historical documentation, or the car's existing configuration, then use that information to guide the final choice between the two bias-ply sizes.
How does tire construction affect the appearance of a restored 1968 Buick LeSabre?
Tire construction plays a major role in the visual character of a restored 1968 Buick LeSabre because bias-ply tires carry the vintage sizing language and traditional profile associated with the car's era. Since this LeSabre's primary fitments are bias-ply, staying in that construction keeps the presentation aligned with a classic full-size Buick.
Appearance is only part of the decision, however, because the selected tire still needs to match the car's actual wheel and size setup. On a restoration-minded car, proper fitment helps preserve the right stance in the wheel opening and avoids a mismatched look that can result from choosing the wrong width family.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1968 Buick LeSabre?
Modifications can absolutely affect tire fitment on a 1968 Buick LeSabre. Even though the primary sizes are 8.45-15 and 8.85-15 on 15-inch rims, changes such as aftermarket wheels, altered ride height, suspension work, or body repairs can change how much room the tire has in normal driving and during steering travel.
That matters most when deciding between the two available widths, because the car may no longer match its earlier setup. A smart check includes wheel diameter, wheel width, visible clearance at the fender and suspension, and whether the current tire size has been working without rubbing before choosing replacement tires.
What should I inspect before driving a 1968 Buick LeSabre on new tires?
Before driving a 1968 Buick LeSabre on new tires, inspect the wheels for damage or corrosion, confirm that the tire size matches the car's setup, and make sure the tires are properly mounted and inflated. A quick look at steering travel and wheel opening clearance is also worthwhile on a large vintage car.
The rest of the inspection should focus on the car itself, especially if it has been stored. Check suspension condition, look for uneven tire clearance from worn components, and make sure the car tracks and brakes normally on a short test drive before putting it into regular road use or taking it on a longer trip.
How should 8.45-15 and 8.85-15 tires on a collector 1968 Buick LeSabre be maintained?
Collector-car tires in 8.45-15 or 8.85-15 should be maintained with regular pressure checks, visual inspections, and attention to age-related deterioration. On a 1968 Buick LeSabre that sees occasional use, sidewall cracking, flat spotting, cuts, bulges, and slow air loss can develop even when tread wear still looks light.
Storage habits matter just as much as driving habits on a car like this. Keeping the Buick away from prolonged sunlight, moisture, excess heat, and ozone sources can help protect the tires, while periodic inspections of both the tires and wheels help catch issues early before the car is returned to steady road use.
