1967 Fiat 850 Tires

A 1967 Fiat 850 does not use one universal tire size across the full model range. Coupe, Sport, and Spider models use 155R13 radial or 560-13 bias-ply tires on 13-inch wheels, while the Sedan uses 155R12 radial or 5.50-12 bias-ply tires on 12-inch wheels.

The key step is identifying the exact sub-model before selecting a tire. Once that is confirmed, the next decision is whether to stay with a traditional numeric bias-ply fitment or choose the radial size used with that same body style and wheel diameter. Cars with replacement wheels or later changes should be measured before ordering tires.

The 1967 Fiat 850 uses either a 12-inch or 13-inch rim, depending on the sub-model. Sedan applications use 12-inch tire sizes, while Coupe, Sport, and Spider applications use 13-inch tire sizes. The rim diameter must match the tire size exactly.

That makes wheel confirmation especially important on a car this old, because replacement wheels are common and sub-models do not share the same diameter. Reading the tire size currently on the car is helpful, but checking the actual wheel diameter is better. A 12-inch tire cannot be mounted on a 13-inch wheel, and a 13-inch tire cannot be mounted on a 12-inch wheel.

No, the 1967 Fiat 850 sub-models do not all use the same tire size. Coupe, Sport, and Spider versions share the 13-inch fitment group, while the Sedan uses the 12-inch fitment group. Each group includes both a bias-ply size and a radial size.

This difference matters because the first tire decision is really a sub-model and wheel-diameter decision, not just a construction choice. A buyer looking at a Sedan should stay within the 12-inch sizes, while a buyer working with a Coupe, Sport, or Spider should stay within the 13-inch sizes. That keeps the search focused before comparing brands, sidewall styles, or radial alternatives.

560-13 is a bias-ply tire size for the 1967 Fiat 850. It belongs to the 13-inch fitment used on Coupe, Sport, and Spider models, while 155R13 is the radial size associated with that same 13-inch group. The two sizes are related by application but represent different construction types.

Choosing between them depends on what matters most for the car. A 560-13 bias-ply setup keeps the traditional numeric sizing style and vintage presentation, especially with whitewall options, while a 155R13 radial keeps the same wheel diameter in a more modern construction format. Wheel condition, actual rim width, and the car's intended use should all be confirmed before changing construction.

Radial equivalents for 560-13 include 155R13, P155/75R13, and P155/70R13. Those represent three different sizing formats: an 80-series metric radial in 155R13, a 75-series P-metric radial in P155/75R13, and a 70-series P-metric radial in P155/70R13.

These sizes are useful alternatives to compare, but they should not be treated as automatic substitutions. The recommended rim-width range tied to the 560-13 equivalents is 4-5 inches, and the vehicle's actual wheel width, clearance, and overall setup still matter. On an older Fiat 850, that check becomes especially important if wheels, suspension, or stance have changed over time.

Start by confirming the car's exact sub-model, current wheel diameter, and the radial size that matches that application. On a 1967 Fiat 850, that means staying in the 13-inch group for Coupe, Sport, and Spider models or the 12-inch group for the Sedan, then comparing the intended radial size against the wheel setup already on the car.

A conversion is more than a construction change alone. Wheel width, tire clearance at the fenders and steering, suspension condition, and overall tire dimensions all deserve attention before making the switch. It also helps to think about the car's purpose, since a restoration-oriented 850 may call for a different visual approach than one being prepared for regular road driving.

The first consideration is whether 560-13 is the correct fitment group for the car, since that size belongs with 13-inch Coupe, Sport, and Spider applications rather than the Sedan. After that, the main differences are brand, tire series, sidewall treatment, and the wheel-width range associated with each product.

BFGoodrich and Firestone both offer 560-13 bias-ply choices, but they are not identical in appearance or wheel compatibility. Narrow whitewall and wide whitewall versions create a very different visual result, and rim-width ranges differ between some options. Matching the tire to the car's actual wheel and the owner's appearance goals usually matters more here than choosing by brand name alone.

Available sidewall styles for 1967 Fiat 850 tires include blackwall, narrow whitewall, and wide whitewall. The blackwall choices appear in the 155R13 radial offerings, while the 560-13 bias-ply selection includes both narrow whitewall and wide whitewall treatments.

Sidewall style has a strong effect on how the car presents, especially on a compact vintage Fiat where the tire is visually prominent. A blackwall radial gives a clean European look, while whitewall bias-ply tires lean more toward a traditional period-style presentation. The right choice depends on whether the goal is understated road use, a restoration-oriented look, or a more decorative vintage appearance.

Tires for the 1967 Fiat 850 are available from Michelin, Dunlop, BFGoodrich, and Firestone across the sizes offered here. Michelin and Dunlop cover the 155R13 radial side, while BFGoodrich and Firestone appear in the 560-13 bias-ply range for 13-inch sport-bodied applications.

Brand choice should be considered alongside size, construction, and appearance rather than as a shortcut to the decision. Some buyers will be focused on a European radial look, while others may want a classic bias-ply whitewall presentation. Once the correct sub-model and wheel diameter are confirmed, compare the available series, sidewall style, and rim-width specifications before narrowing the selection.

A period-style 1967 Fiat 850 usually starts with staying in the correct size family for the sub-model and then deciding whether the car should retain a traditional bias-ply look or a vintage-style radial presentation. That means 560-13 or 155R13 for Coupe, Sport, and Spider models, and 5.50-12 or 155R12 for the Sedan.

Bias-ply sizing often gives the most traditional visual cue because the numeric format and available whitewall treatments read as more overtly vintage. A radial can still suit the era well, especially on a sport-bodied 850 with a blackwall presentation. When strict originality matters, it is wise to compare the car against marque-specific historical references before settling on brand and sidewall details.

A period-style look on a 1967 Fiat 850 can go in more than one direction depending on the body style and the visual character being pursued. Blackwall radials create a restrained European appearance, while narrow whitewall and wide whitewall bias-ply tires deliver a more decorative vintage look in the 560-13 size range.

The best choice is usually the one that matches the car's overall restoration theme rather than the one with the boldest styling. On a compact Fiat, even a small sidewall change is easy to notice, so whitewall width should be chosen carefully. Matching the sidewall treatment to wheel style, trim level, and intended presentation usually produces a more convincing result than choosing by novelty.

Yes, modifications can affect tire fitment on a 1967 Fiat 850. Changes such as aftermarket wheels, altered wheel width, suspension lowering, or bodywork differences can change how a 12-inch or 13-inch tire fits even when the tire size itself belongs to the correct sub-model group.

That is especially important on a small car with limited clearance around the fenders and steering components. A modified 850 should be checked for wheel diameter, wheel width, steering travel, and available space before moving to a different construction or equivalent size. Even a correct-looking tire can create issues if the wheel setup no longer matches the original fitment pattern.

Before driving a 1967 Fiat 850 on new tires, inspect the wheels for damage or corrosion, confirm the valve stems are sound, and make sure the tires match the car's actual wheel diameter and sub-model. Lug hardware, wheel seating surfaces, and basic suspension condition also deserve attention before the first road test.

A short initial drive should be followed by another check for air loss, rubbing, or uneven clearance at full steering lock. Vintage cars that sit for long periods can have issues beyond the tires themselves, so looking over bearings, brakes, and alignment condition is also worthwhile. A correct tire size works best when the surrounding chassis and wheel components are equally road-ready.

Before a longer drive in a 1967 Fiat 850, check tire pressure, tread condition, visible cracking, bulges, cuts, and any signs of slow air loss. It also helps to confirm that all four tires are the correct size for the car's sub-model and that none of them show uneven wear that could point to alignment or suspension problems.

Collector vehicles often spend more time parked than driven, so age and storage condition matter just as much as tread depth. Looking over the spare, jack equipment, and wheel fasteners is sensible before heading out. On a small vintage Fiat, a fresh inspection can prevent a minor tire issue from becoming a much larger roadside problem once speeds and distances increase.