1971 Opel Tire Fitment Guide

1971 Opel vehicles use four sizes across three models: 165R13 fits the 1971 Opel 1900 and 1971 Opel Opel, 600-13 fits the 1971 Opel 1900, 155R13 fits the 1971 Opel Kadett, and 560-13 fits the 1971 Opel Opel. All four sizes mount on 13-inch rims. Rim-width coverage varies by size, with 165R13 fitting 4.50 to 6.00-inch rims, 600-13 fitting 4.00 to 4.50-inch rims, 155R13 fitting 4.00 to 5.50-inch rims, and 560-13 fitting either 3.50 to 4.00 or 4.00 to 4.50-inch rims depending on the tire chosen.

The practical takeaway is that year and make alone are not enough for a 1971 Opel. You need to identify the model first, then confirm the actual wheel width on the car before moving ahead. That matters most if a car has been restored, modified, or swapped onto different steel wheels over the years, since a 13-inch diameter match still does not guarantee the same ideal rim width from one size to another.

On a 1971 Opel, 165R13 is a radial metric size. The 165 refers to a nominal section width of 165 millimeters, the R designates radial construction, and the 13 is the wheel diameter in inches. In period European sizing, a metric size written this way without an aspect ratio is conventionally treated as an 80-series profile. Products in this size appear as blackwall radials from Michelin and Dunlop, with H speed ratings that carry a 130 mph ceiling.

That decoding matters because 165R13 is not just a random number string; it points you toward a distinctly European radial fitment that suits the 1971 Opel 1900 and 1971 Opel Opel. If your goal is a tire that looks and feels right for a 1970s German compact while still keeping radial behavior, this is the size to focus on. The next step is checking whether your car still has wheels that fall within the approved rim-width range for the specific tire you choose.

No, 1971 Opel models do not all use the same tire size. The Kadett uses 155R13, the 1900 uses either 165R13 or 600-13, and the Opel model uses either 165R13 or 560-13. Even though every one of those sizes mounts on a 13-inch wheel, the widths and constructions differ. That means a tire that is right for one 1971 Opel model may be incorrect for another, even within the same model year.

For a buyer, that model split is the first thing to resolve before looking at brands or sidewalls. If the car has changed hands several times, do not assume the tire currently on it is the proper reference. Confirm the model designation, compare the wheel width on the car to the intended tire's approved range, and then decide whether you want a radial setup for regular road use or a bias-ply look for a more period-authentic presentation.

If your 1971 Opel is a 1900, the choice between 165R13 and 600-13 is really a choice between radial and bias-ply construction. The 165R13 is a radial metric size with blackwall options from Michelin and Dunlop, while 600-13 is a traditional numeric bias-ply offered by BFGoodrich in whitewall styles. Both use a 13-inch rim, but the radial and bias-ply tires call for different rim-width ranges and deliver a different period character behind the wheel.

A 600-13 makes the most sense when restoration appearance and traditional feel are the priority. A 165R13 is usually the more natural direction if you plan to drive the car regularly and want the sort of behavior most owners expect from a radial. Before settling on either one, confirm the actual wheel width on the car so the tire you choose matches both the model and the wheel it will mount on.

Sidewall style on 1971 Opel tires depends on the size and construction. The radial sizes, 165R13 and 155R13, are blackwall tires. The bias-ply sizes, 600-13 and 560-13, are available with narrow whitewall and wide whitewall treatments. That means the sidewall decision is tied closely to whether your Opel uses a radial metric size or a numeric bias-ply size, not just to the make and year alone.

For a 1971 Opel restoration, blackwall radials generally suit the European small-car look more naturally, while the whitewall bias-ply options give the car a more period-styled presentation as many restored imports and dealer-delivered cars wore in the era. The best choice depends on how authentic you want the finished car to appear and which size belongs on your exact model. Sidewall style should be treated as part of the overall restoration look, not as an afterthought.

Three brands cover 1971 Opel fitments here: Michelin, Dunlop, BFGoodrich, and Firestone, with availability depending on size. Michelin and Dunlop cover the radial sizes 165R13 and 155R13 in blackwall form. BFGoodrich covers 600-13 and also offers 560-13 in whitewall bias-ply form, while Firestone also appears in 560-13. The result is a mix of European-style radial offerings and American classic-style bias-ply choices.

That brand spread matters because it helps narrow your search by the character you want from the car. A Michelin or Dunlop radial tends to align with the imported European identity of a 1971 Opel, while BFGoodrich and Firestone bias-ply options are aimed more at owners who want a traditional restored appearance with whitewall styling. Once you know the correct size for your model, the remaining decision is usually which construction and visual presentation best fit the car's mission.

Rim-width requirements on 1971 Opel tires depend on the size. The 165R13 radial fits 4.50 to 6.00-inch rims, the 600-13 bias-ply fits 4.00 to 4.50-inch rims, the 155R13 radial fits 4.00 to 5.50-inch rims, and 560-13 spans either 3.50 to 4.00 inches or 4.00 to 4.50 inches depending on the brand and product. Every one of these tires uses a 13-inch rim diameter, but width still needs to be checked carefully.

That is especially important on older Opels because wheels may have been changed during decades of service, restoration, or parts interchange. A tire can fit the wheel diameter and still be wrong for the wheel width, which affects profile shape and overall setup. Measure the wheel you actually have, compare it to the approved width range for the tire you want, and avoid assuming that one 13-inch Opel wheel is the same as another.

Inner-tube requirements on 1971 Opel tires vary by size and product. The 165R13 and 155R13 Michelin radials are marked TL for tubeless use, while other products in those radial sizes vary by product marking. The bias-ply sizes 600-13 and 560-13 are not shown with TL markings here, so tube use should be confirmed against the exact tire and wheel combination before installation. The wheel's condition and original design matter just as much as the tire marking.

On a collector Opel, tube decisions should never be made by habit alone. A tubeless-marked tire still needs a sound wheel that can seal correctly, and an older wheel with pitting or a non-ideal bead seat may call for a more careful approach. Review the sidewall marking of the exact tire you plan to use, inspect the wheel itself, and have the installer confirm whether a tube is appropriate for that specific assembly.

All 1971 Opel tire sizes here share a 13-inch rim diameter, so original 13-inch wheels can be diameter-compatible across the range. That does not mean every wheel suits every size equally well, because the approved rim widths differ. A 165R13 radial wants a wider rim range than a 560-13 bias-ply, and a 600-13 bias-ply sits in a narrower window than the radial sizes. Diameter is only the first checkpoint.

If you are moving from one size or construction to another, treat the wheel as part of the fitment decision rather than just the tire. Confirm the wheel width before mounting, especially if the car has been restored with parts from another Opel or has aftermarket replacements. That extra step helps preserve proper profile shape and avoids forcing a tire onto a rim outside the manufacturer's approved range.

A 1971 Opel stores best in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, furnaces, and other ozone sources that can age rubber. Keep the tires properly inflated, move the car periodically if possible, and avoid leaving it parked for long stretches on damp concrete without protection. Bias-ply tires such as 600-13 and 560-13 tend to develop temporary flat-spotting more readily during static storage, while radials generally recover more quickly once driven.

If the Opel will sit for an extended season, many owners either roll the car occasionally or support it in a way that reduces constant load on one patch of tread. Clean the tires with mild soap and water rather than dressings that leave a glossy residue, and keep the storage area well ventilated. The goal is to protect both the rubber and the casing structure so the car is ready for safe use when it returns to the road.

Tire life on a 1971 Opel should be judged more by age and condition than by mileage. Collector cars often cover so few miles that the rubber ages out before the tread wears down. A good rule is to evaluate tires closely once they reach five to seven years of age and to treat around ten years as a serious replacement point, even if the tread still looks serviceable. The DOT date code on the tire sidewall is the starting point for that timeline.

That approach matters even more on a lightly used import like a 1971 Opel, where long storage periods can hide deterioration until the car is back at speed. Sidewall cracking, hardening, belt or casing irregularities, and chronic air loss all matter more than remaining tread depth on a weekend car. If the tire's age is nearing the upper end of the acceptable window, replacement is usually wiser than trying to stretch a few more seasons out of it.

Tires on a 1971 Opel should be inspected before every drive and again before any longer outing. Check inflation, look for cuts, bulges, sidewall cracking, uneven wear, and anything embedded in the tread. On cars running tube-type assemblies or older wheels, pay close attention to valve stems and to any slow air loss that suggests a problem at the tube, stem, or wheel interface. A quick walk-around catches many problems before they become roadside issues.

Older compact cars often feel light and responsive, which can make a tire issue easy to overlook until speed increases or road surfaces change. Add a more thorough inspection at least seasonally, including checking spare-tire condition and verifying that all four tires still match the setup you intend to run. Consistent inspection is one of the simplest ways to keep a vintage Opel dependable without turning every drive into a major pre-trip ritual.

A 1971 Opel 1900 could plausibly be associated with either a radial or a bias-ply fitment within this year-and-make range, with 165R13 and 600-13 both applying to the model. In the early 1970s, European imports were already strongly associated with radial tire use, while bias-ply construction still remained part of the period landscape in some applications and replacement practice. That makes size and construction both worth confirming against the car's original market equipment, wheel, and restoration goal.

For a car being restored to a specific delivery configuration, the safest route is to verify against factory literature, surviving original examples, or Opel marque specialists. The right answer for show judging may depend not only on the model but also on market, production timing, and the standard the event applies. Use 165R13 when the goal is an authentic European radial presentation, and look at 600-13 when a period bias-ply appearance is more appropriate to the build.

Correct tire fitment absolutely matters when a 1971 Opel is judged seriously. Size, construction type, and sidewall appearance all affect whether the car looks appropriate for its era and market position. A blackwall radial and a whitewall bias-ply create very different visual impressions, and judges or knowledgeable enthusiasts will notice if the car's tire choice conflicts with the restoration approach. Even when the wheel diameter is correct, the wrong construction or sidewall style can stand out immediately.

That does not mean every event applies the same standard. Some shows reward overall presentation, while concours-level judging may scrutinize whether the tire's size family and sidewall treatment match what the car should have worn when new. If originality is the target, treat the tire as part of the restoration plan from the beginning and confirm expectations with Opel clubs or event organizers before mounting a set that may be visually convincing but not truly era-correct.

For a 1971 Opel in radial sizes, Michelin XAS-family tires and the Dunlop SP Sport Aquajet overlap in fitment but differ in some details. In 165R13, Michelin XAS and XAS-FF use a 4.50 to 6.00-inch rim range and are marked 165HR13 82H TL, while the Dunlop carries a 165R13 82H marking and a maximum load of 1,047 pounds. In 155R13, Michelin appears as 155HR13 78H TL with a 4.00 to 5.50-inch rim range, while the Dunlop carries a 155R13 78H marking and a 937-pound maximum load.

Those differences do not make one universally right and the other wrong; they simply help you match the tire to the wheel and the character you want. If tubeless marking and a clearly stated rim-width window are priorities, the Michelin details may matter more to you. If you are comparing load figures or simply choosing between period-style European radial offerings in the proper size, the Dunlop may be the reference point you want to evaluate alongside it.

1971 Opel tires can be appropriate for highway use when the size, condition, inflation, and construction match the car and the way it is driven. The radial sizes 165R13 and 155R13 carry H speed ratings, which correspond to a 130 mph ceiling. The bias-ply sizes 600-13 and 560-13 are older-style constructions and should be approached with the expectations that go with a vintage tire design. On a 1971 Opel, the car's brakes, suspension, alignment, and general mechanical condition are often just as important to safe highway behavior as the tire itself.

Most owners will never approach the upper speed capability of an H-rated radial in a classic Opel, so real-world safety usually comes down to preparation and restraint rather than chasing speed numbers. Bias-ply cars may track and react differently on modern roads, especially in crosswinds or rutted pavement, and that is normal for the construction. Choose a tire that suits the car's intended use, inspect it carefully, and drive within both the tire's rating and the vehicle's era-appropriate limits.

Inflation pressure on 1971 Opel tires should start with the factory recommendation for the car and then be cross-checked against the tire manufacturer's limits. Among the bias-ply sizes here, 600-13 carries a load figure of 1,010 pounds at 32 psi, while 560-13 carries 850 pounds at 30 psi. Those figures are load-and-pressure references for the tire itself, not blanket instructions to run every 1971 Opel tire at the same pressure. Radial sizes should never inherit pressure settings from a different size or construction just because the wheel diameter matches.

The safest approach is to use the owner's manual or factory placard as the vehicle baseline and then make sure the tire you chose is operating within its own rated limits. Pressure should also be checked cold, not after driving. If your Opel has been modified, carries unusual loads, or runs a different construction than the car originally used, it is worth reviewing the setup with a knowledgeable installer so the car handles predictably and the tire is not over- or under-inflated.

Before a longer drive in a 1971 Opel, inspect all four tires for cracking, cuts, bulges, uneven wear, and correct cold pressure, and do not forget the spare. Look closely at the valve stems and, on older tube-type assemblies, watch for signs of leakage or slow deflation. Make sure the tread is free of embedded debris and that the tires are the size and construction you actually intend to run on the car. A quick tire check is one part of a broader mechanical review that suits any vintage Opel.

Longer trips put more heat and sustained load into the tires than short local drives, so small issues become more important. It is wise to combine the tire inspection with checks of wheel fasteners, brakes, fluid levels, lights, and the general roadworthiness of the car. If the Opel has been sitting for a while, take a short local shakedown drive first. That gives you a chance to feel for vibration, pull, or flat-spotting before committing the car to a longer highway run.