1967 Austin 1800 Tires

The 1967 Austin 1800 uses two primary tire sizes: 175R13 in radial construction and 650-13 in bias-ply construction. Both sizes are associated with the car on a 13-inch rim, so the main difference is not wheel diameter but the tire format and construction style you are choosing to run.

That makes the next step more specific than simply matching a number on the sidewall. The car's current wheel width, existing tire type, restoration goals, and intended road use all matter. If the Austin still wears period-style wheels and appearance matters most, 650-13 may be the natural path. If the car is already set up around radial sizing, 175R13 may be the more appropriate starting point.

The 1967 Austin 1800 uses a 13-inch rim diameter with both of its primary tire sizes. That applies whether the car is fitted with a 175R13 radial or a 650-13 bias-ply tire, so rim diameter remains consistent across the available fitment choices for this model.

Rim diameter alone does not settle the entire fitment question, because wheel width still needs to match the tire being considered. The available 650-13 bias-ply products call for a 4.50 to 5.00 inch rim width, and radial-equivalent guidance for 650-13 points to a 4 to 6 inch range. Measuring the actual wheel before ordering is especially worthwhile on any Austin 1800 that may have had wheels changed over the years.

Yes. The 1967 Austin 1800 Base is associated with the same two primary tire sizes as the overall model fitment: 175R13 radial and 650-13 bias-ply. There is no separate Base-only tire-size change within this covered fitment, so the choice centers on construction and setup rather than trim-level variation.

That means a Base owner should focus less on sub-model differences and more on what is actually on the car today. Checking the existing wheel width, sidewall markings, and overall stance helps confirm whether the Austin is being kept in a traditional bias-ply format or run with radial sizing. It also helps narrow the decision between restoration-oriented appearance and a radial-style road setup.

For the 1967 Austin 1800, 650-13 is the bias-ply fitment. It uses the older numeric bias-ply sizing system, where the 6.50 figure refers to nominal section width in inches and the 13 identifies the wheel diameter. The separate radial fitment associated with this car is 175R13.

That distinction matters because a bias-ply tire affects both the look of the car and the way the tire should be selected. Buyers comparing 650-13 options can concentrate on classic details such as narrow or wide whitewalls and brand preference, while anyone considering a move to radial construction should compare the available radial-equivalent sizes and confirm wheel width, tire dimensions, and clearance before changing formats.

Radial equivalents for 650-13 include 175R13, P175/75R13, P185/70R13, and 650R13. Those cover several approaches: 175R13 is an 80-series metric radial, P175/75R13 is a 75-series P-metric radial, P185/70R13 is a 70-series P-metric radial, and 650R13 is a bias-look radial equivalent.

Each of those sizes relates back to the original 650-13 in a different way, so the choice is not only about switching to radial construction. The recommended rim-width range is 4 to 6 inches, and the car's wheel width, fender clearance, and overall setup should be checked carefully. A bias-look radial can preserve a more traditional appearance, while the metric and P-metric options use more modern size language.

Start by confirming which original size the car is built around and which radial equivalent is being considered. A 1967 Austin 1800 using 650-13 bias-ply can be evaluated against 175R13, P175/75R13, P185/70R13, or 650R13 radial equivalents, all of which still require verification rather than assumption.

The practical checks are wheel width, 13-inch rim compatibility, overall tire dimensions, steering clearance, and fender clearance through suspension movement. It is also worth looking at suspension condition and alignment on a low-use collector car before changing construction. Converting to radial should be treated as a complete fitment decision, not simply as matching one sidewall number to another.

The main considerations are construction, sidewall appearance, brand, and wheel compatibility. On the 1967 Austin 1800, 650-13 is the bias-ply fitment, and available choices come from Coker Classic and US Royal in classic bias-ply series. Sidewall styles include narrow whitewall and wide whitewall treatments, which can change the car's visual character quite a bit.

Selection becomes easier once the goal is clear. A more restrained period-style look may point one way, while a fuller whitewall presentation may point another. The available 650-13 tires share a 13-inch rim diameter and call for a 4.50 to 5.00 inch rim width, so confirming the wheel before purchase helps narrow the choice to appearance and brand rather than basic fitment concerns.

Within the available 650-13 offerings for the 1967 Austin 1800, sidewall choices include narrow whitewall and wide whitewall styles. Those options appear in classic bias-ply lines from Coker Classic and US Royal, giving the car a noticeably different look even while staying within the same core tire size.

That makes sidewall style one of the most visible decisions on this car. A narrow whitewall tends to keep the presentation more understated, while a wide whitewall creates a stronger period-style statement. The right choice depends on how the Austin is being restored or displayed, and it is worth comparing the sidewall treatment to the car's wheel covers, paint tone, and overall visual direction before selecting a tire.

The available 650-13 tires for the 1967 Austin 1800 come from Coker Classic and US Royal. Both brands appear in classic bias-ply series and are offered with whitewall treatments, so the brand decision is part of a broader choice that also includes tire presentation and wheel compatibility.

Rather than treating brand alone as the deciding factor, compare each option within the correct size and construction. Sidewall style, intended appearance, rim-width requirement, and load specification all play a role in narrowing the right tire for the car. On a restoration-oriented Austin 1800, that usually means deciding what visual effect is wanted first, then choosing the brand and product that align with that direction.

For a period-style 1967 Austin 1800, the 650-13 bias-ply size is the natural starting point because it preserves the traditional sizing format associated with the car's classic-era fitment. Available choices in that size include Coker Classic and US Royal bias-ply tires, with whitewall options that can support different restoration and presentation goals.

The exact visual direction still matters, because period-style does not automatically mean one sidewall treatment is correct for every car. Narrow whitewall and wide whitewall versions create different impressions, and originality-focused buyers may want to compare surviving photos, marque-club guidance, or other vehicle-specific references before choosing. For many owners, the key is matching the tire's look to the car's overall restoration character.

Tire construction can change the visual impression of a restored 1967 Austin 1800 even when the wheel diameter stays the same. A 650-13 bias-ply keeps the older numeric sizing style and a more traditional presentation, while a radial-format tire such as 175R13 introduces a more modern sizing convention and a different visual cue at the sidewall.

Appearance-minded buyers often look beyond simple fitment and think about how the tire complements the car's stance, trim, and restoration era. A bias-look radial such as 650R13 can also enter the conversation for owners who want radial construction without giving up a classic-style presentation. The best choice depends on how closely the finished car is meant to reflect a traditional road-going look.

Yes. Even though the 1967 Austin 1800 uses 13-inch tire fitments, modifications can still change what works on the car in practice. Aftermarket wheels, altered wheel width, suspension changes, ride-height changes, or bodywork differences can all affect whether a 175R13, 650-13, or a radial equivalent has the clearance and wheel support it needs.

That is why the current setup matters more than assumptions about original specification. Measuring wheel width, confirming rim diameter, and checking clearance at full steering lock and through suspension travel can prevent avoidable problems. Any Austin 1800 that has been restored, modified, or simply updated over the years deserves a fresh fitment check before changing tire size or construction.

Begin with the basics: verify that the tire size matches the car's intended fitment, that the wheel diameter is 13 inches, and that wheel width suits the tire being mounted. Then inspect the wheels themselves for damage, check valve stems, and make sure the tires are properly inflated and seated before putting the Austin 1800 back into regular road use.

A broader road-use inspection is just as important on a classic car. Look over steering and suspension components, confirm there is no rubbing at full lock, and recheck lug hardware after installation. It is also wise to inspect any older spare tire on the car, since collector vehicles often carry little-used tires that may look serviceable but no longer match the condition of the newly mounted set.

650-13 tires on a collector 1967 Austin 1800 should be maintained with regular pressure checks, visual inspections, and careful storage habits. Bias-ply tires deserve the same attention as any collector-car tire: watch for cracking, bulges, cuts, uneven wear, and slow air loss, especially if the car spends long periods parked between outings.

Good maintenance also includes protecting the tires from prolonged sunlight, excess heat, moisture, and ozone exposure from electric motors or shop equipment. Rolling the car periodically and inspecting the tread and sidewalls before each drive helps catch problems early. On a low-mile Austin 1800, condition and age matter more than tread depth alone, so occasional professional inspection is worthwhile.