185R400 91S TT X Radial Blackwall Tire
In 1949, Michelin set out to dominate the tire market with a considerable advance in technology. Its revolutionary radial construction of the Michelin X and later the Michelin X-Stop featured the special feature of separating the sidewall function from the crown function. The first major innovation from Michelin, the radial tire was first marketed as the "X" tire in 1949. The advantages of the radial Michelin X tire compared with the cross-ply tire could be clearly seen in all areas. Radial construction offered greater safety, grip and braking performance. Radials also proved economical to use, with double the wear mileage and a considerable reduction in fuel consumption. Drivers enjoyed increased comfort levels thanks to the flexibility of the sidewalls.
Blackwall Tire
Since the introduction of carbon black rocked the tire industry, the original recipe for most tires has been a solid black sidewall. For classics and collector cars alike, it's hard to beat the no-nonsense appeal of a classic blackwall style tire. British sports car, classic truck and even hot rod enthusiasts love the way a nice period correct blackwall tire looks on their vehicles.
S Speed Rating
S Speed Rated: Up to 112 mph (180 km/h). Often required OE for higher performance trim level classic automobiles.
Michelin X Radial
The MICHELIN X tire has a revolutionary radial construction with the special feature of separating the sidewall function from the crown function. The advantages of the radial tire compared to the conventional tire can be seen in all areas: Significantly improved road holding, grip and braking. Economy in use: mileage efficiency doubled, significant reduction in fuel consumption. Great comfort thanks to the flexibility of the sidewalls. The first major Michelin innovation, the radial ply tire, was marketed under the name "Michelin Radial X" in 1949. The X equips different categories of cars: from the original and popular 2CV or Coccinelle to the fascinating Mercedes 190 SL or Facel Vega.
Michelin Brand Classic Tires
Michelin is known for its high quality tires, and we keep thousands of popular Michelin tires in stock every day. Our Michelin product offerings include fitments from the 1920's all the way into the 2000's, with an intense focus on classic sports cars. Build quality, fitment options and period correct styling makes the Michelin product line a favorite among sports car enthusiasts around the world.
Please Note
- Tire mounted on wheel for demonstration purposes only. Wheel and other accessories are not included. Please note that dimensions listed (tread width, section width and overall diameter) are non-scientific and based on an inflated tire, mounted to a wheel. Dimensions may vary due to rim width and inflation pressure.
| SKU | 63189 |
|---|---|
| Weight | 26.000000 |
| Brand | Michelin |
| Product Size | 185R400 91S TT |
| Load Index | 91 |
| Tube Type or Tubeless | Tube Type |
| Rim Diameter | 400mm |
| Tire Construction | Radial |
| Tire Series | Michelin X Radial |
| Speed Rating | S |
| DOT Approved | Yes |
| Width Radial | 185 mm |
| Sidewall Style | Blackwall |
| Radial Aspect Ratio | 85 |
| GTIN | 08669964056 |
| Service Description | 91S |
| Section Width (IN) | 7.3 |
| Rim Width (in) | 5.00 - 6.50 |
| Overall Diameter (IN) | 27.8 |
| Availability Date | 2025-07-21T00:00:00Z |
This Michelin X Stop comes in the 185R400 size, suitable for the classic and collector vehicles listed below.
About the 185R400 Tire Size
The 185R400 is a radial tire size associated here with a 1962 Maserati 3500 application. On this product page, Michelin X Stop is offered in the 185R400 size, making it relevant for shoppers matching this radial fitment to that vehicle application. For more detailed information on this tire size, explore the 185R400 tire on Coker Tire Fitment Guide.
Vehicle Fitment for the Michelin X Stop | 185R400
The Michelin X Stop | 185R400 is available in a tire size associated with select classic and collector vehicles. The vehicle applications below are organized by year, make, and model to help identify vehicles associated with the 185R400 size. Explore the linked Make & Model and Year Make & Model pages for more detailed fitment information.
Fitment information should be verified for the specific vehicle before purchase. Confirm tire size, wheel fit, load requirements, overall diameter, and available clearance.
1961–19651 make · 1 fitment
The 1961–1965 period includes Maserati applications associated with the 185R400 tire size. This period is represented here by a select fitment for the Maserati 3500.
Maserati
Maserati fitment in this period is represented by the 3500.
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