2003-2008 BMW Z4 (E85) Replacement Canvas Convertible Top with Heated Glass Rear Window
Transform your BMW Z4’s style and performance with the top-quality Sierra Auto Tops & Seats replacement convertible top. This top was specifically designed to be a perfect fit on all 2003-2008 BMW Z4 and Z4M Roadster Convertibles, including the Z4 3.0i Roadster, Z4 3.0si Roadster, Z4 M Roadster, and the Z4 Roadster. This top is the best blend of durability, functionality, and outright good looks. Whether you’re upgrading your Z4’s look or replacing a worn-out top, Sierra Auto Tops & Seats ensures excellent quality and fit.
Quick Specs at a Glance:
- Compatibility: This top was specifically designed to be a perfect fit on all 2003-2008 BMW Z4 and Z4M Roadster Convertibles, including the Z4 3.0i Roadster, Z4 3.0si Roadster, Z4 M Roadster, and the Z4 Roadster.
- Rear Window: Hand-bonded heated glass window has a factory tint for superior visibility and is DOT-approved.
- Material: Marine-grade beige canvas cloth, which is designed to be long-lasting and likewise resistant to fading.
- Warranty: Backed by a 1-Year manufacturer’s warranty.
- Manufactured: Made in the USA.
Your 2003-2008 BMW Z4 Replacement Convertible Top is manufactured using premium marine-grade beige canvas cloth. We manufacture our 2003-2008 BMW Z4 convertible tops in the USA using the original vehicle’s patterns and specifications. The topping material was made in the same factory as the original BMW top, so the color, texture, look, and feel will match. The topping material was made in the same factory as the original BMW top, so the color, texture, look, and feel will match. The topping material is a three-ply composite made of acrylic square-weave outer fabric, a rubber inner layer, and a cotton lining. It comes fully assembled and ready for immediate installation and requires no cutting or sewing. These tops have been time-tested in hundreds of installations, which is why we feel comfortable providing a 100% guarantee that you will not have any problems with the fit.
The heated glass window has a factory tint and is DOT approved. The electrical connectors attach to your existing wiring harness for the rear window defroster. The convertible top window bonding system provides an exceptionally clean look and an extremely secure bond guaranteed not to fail for five years for the original owner. The heater and defroster glass windows from SIERRA Auto Tops match the dimensions and contours of the original equipment. The window is made using tempered safety glass and marked AS-2 to show it meets all requirements of the National Traffic and Vehicle Safety Act and the Federal Motor Vehicle Safety Standard, No. 205 (Glazing Materials CF MVSS 205). It also includes a new weather seal. The convertible top window bonding system provides an exceptionally clean look and extremely secure bond.

Premium Features That Set It Apart
High-Performance Heated Glass Rear Window
- Hand-Bonded & Heated Glass
- The rear glass window is expertly hand-bonded to the convertible top to create a seamless finish. The advanced heated glass technology makes sure you get the best performance even in freezing conditions.
- DOT-Approved Quality
- The tinted glass meets all Department of Transportation standards, guaranteeing both safety and compliance.
- Embedded Defroster Wiring
- Featuring integrated defroster wiring, this top offers effortless electrical integration into your convertible, making chilly mornings a breeze.
Heavy-Duty Marine-Grade Canvas Cloth
- Durable Construction
- Made from high-quality marine-grade beige canvas cloth, this fabric is built to withstand fading, cracking, and becoming soft due to long-term sun exposure or tough weather.
- Long-Lasting Good Looks
- The beige canvas cloth offers not only outstanding durability but also a textured finish that enhances your convertible’s sleek appearance.
- Weather-Resistant
- Built to withstand rain, snow, and heat, this convertible top ensures all-weather reliability and performance.
American Craftsmanship You Can Trust
- Manufactured with precision in the United States, this convertible top reflects superior craftsmanship. Every detail, from the tight stitching to the materials used, showcases Sierra Auto Tops & Seats’ commitment to exceptional quality. With more than four decades of expertise in convertible top design and production, Sierra Auto Tops & Seats delivers results you can count on.
1-Year Manufacturer’s Warranty
- Sierra Auto Tops & Seats demonstrates its commitment to quality by providing a comprehensive one-year warranty, ensuring your peace of mind. Our dedication to quality and durability ensures the protection of your investment.
Why Choose AutoTopsDirect for Sierra Auto Tops & Seats?
Since 1979, Sierra Auto Tops & Seats has been setting the industry standard for replacement soft tops and automotive interiors. With a focus on precision manufacturing, fine attention to detail, and premium materials, Sierra Auto Tops & Seats makes products designed to exceed customer expectations. Sierra Auto Tops & Seats engineered their convertible tops for easy installation and great fit, catering to both DIY enthusiasts and automotive professionals. Decades of innovation and expertise make Sierra Auto Tops & Seats the trusted choice for BMW Z4 owners seeking the best in replacement soft tops, and AutoTopsDirect has the most inventory, best pricing, and highest level of customer service to back up that brand.
Elevate Your BMW Z4 Today
Upgrade your Z4 with a replacement convertible top that combines precision engineering, durable materials, and stylish design. The Sierra Auto Tops & Seats soft top replacement is the ideal choice for BMW Z4 convertible owners ready to restore their vehicle’s look. Order now and experience the expert craftsmanship and top quality that Sierra Auto Tops & Seats has become known for. Your BMW deserves nothing less than the best.
WARNING: Cancer and Reproductive Harm— www.P65Warnings.ca.gov




This review specifically addresses the first half of the transaction. Purchased through on-line checkout Friday afternoon, shipped same day from California, arrived at my door on the following Monday having cleared customs at Fedex in Mississauga in the middle of the night Sunday/Monday. Stunning- and the shipping cost was far cheaper than I imagined, too. The top quality looks great – it’s little darker than I expected but who knows the colour of the original some 17 years prior to baking in the sun. I will do a review of the install process later on. They provided me a good pdf of instructions and there’s a ton of video on-line. For now, I’m doing the motor mod into the trunk through the parcel shelf. Promises to be fun…
The color is almost spot on the feel of the canvas is pretty close to the original, the fit was good but the road noise was not the same, the replacement top allowed more road noise to go threw other than that I rate it four star’s
This is a great product. I ordered this to replace the top on my mom’s Z4. The directions were very useful. And the quality of the top is beautiful. All gaskets in glass are in superb shape. Installation required patients but the end result was beautiful.
good product at a good price, fast shipping