It gets the same naturally aspirated V12 and six-speed manual from the coupe version.
Gordon Murray Automotive has taken the covers off its T.33 Spider: a drop-top take on the already excellent T.33 coupe. Like the fixed-roof variant, it has a sonorous V12 engine displacing 3.9 liters and revving to 11,100 rpm. This is the world's lightest road-going V12, weighing just 392 pounds. As in the coupe, the Cosworth-developed engine produces 608 hp and 333 lb-ft of torque, all of which is sent to the rear axle through an Xtrac six-speed manual transmission - there's no automatic on the Spider due to the insane demand for the manual witnessed on the Coupe.
GMA doesn't care about headline figures, so we don't know the official 0-60 mph time or the top speed, but you don't buy a GMA supercar to boast about boring numbers. You buy it to experience a purity that no other automaker can match, and based on what we know so far, the T.33 Spider will not disappoint.
Based on looks alone, it's very apparent that the Spider was designed and developed alongside the coupe, which Murray confirms: "From the very beginning, I knew that one of the biggest challenges in designing the T.33 Spider would be keeping the purity, balance and overall beauty of the T.33. That's why I sketched both versions at the same time to make sure that the proportions would work."
The result is a drop-top supercar with two removable panels (which, along with the rear deck, can come in body color or be painted in any hue you like) that still allow for a central air scoop to ram air into that engine. The effect is something between a targa and a speedster, but the T.33 Spider intentionally does without the double humps typically associated with the latter body style because the faired-in design is "more streamlined."
When you decide to enjoy open-air motoring, the roof panels fit neatly into the 4.06 cubic foot front trunk. In most other supercars with removable hardtops, you have to make a choice between a sunlit cabin and storage space, but the T.33 has a trick up each of its sleeves. With the doors open, a button is revealed that opens a 3.18 ft3 storage compartment on each side, not dissimilar to the storage units on a Pagani Huayra, for example. And it still has a traditional frunk.
Whether you have the roof on or not, the Spider gets a deployable rear window that can be lowered for a more open feeling or raised for less cabin turbulence. Further bolstering its claims as a practical supercar is the T.33 Spider's inclusion of Apple CarPlay and Android Auto.
Here in the cabin, you'll find plenty of aluminum, carbon fiber, and leather, along with rear bulkhead trim that is now body-colored for a greater feeling of openness. The carbon fiber steering wheel is trimmed in leather, while the gear lever, pedals, and switchgear are machined from aluminum alloy. The bucket seats are fashioned from carbon fiber and dressed in a mix of leather and Alcantara, with the cockpit open for limitless customization based on the taste of the owner. Again, the design of the cabin shows how useful it is to develop two body styles based on the same car side by side - the cabin of the T.33 looks perfectly suited to drop-top driving.
The parallel development of the two variants also means that the Spider has remarkable torsional stiffness, being based on the same iStream carbon fiber monocoque as the coupe. As a result of GMA's fastidious attention to detail and obsession with saving weight, the Spider has a target dry weight of just 2,442.7 lbs - less than 40 lbs over the coupe's mass.
Another piece of the puzzle contributing to the T.33 Spider's undoubted brilliance is that GMA developed an electrohydraulic steering system. This provides the feel you expect from a traditional hydraulic power steering system but rather than a parasitic engine pump, this setup utilizes an on-demand electric pump, making even the steering as efficient as possible.
When it's time to stop, Carbon Ceramic Matrix brakes measuring 370 millimeters by 34 mm with six-piston calipers up front work with 340x34 mm four-piston brakes at the rear.
Lightweight forged aluminum wheels (19-inch in front, 20-inch at the rear) are wrapped in Michelin Pilot Sport 4 S tires. For such a low-volume special, these tires may seem a bit underwhelming, but this is again proof of GMA's mission to provide cars you love to drive. GMA specifically chose these tires for their all-weather brilliance and their ease of availability, thereby encouraging owners to use the car as much as possible.
Before they do, owners will have the opportunity to customize the car to their exact tastes, but four preselected design themes are already on offer for those who need a little inspiration. Two of these are based on two of GMA's core values, Return to Beauty and Engineering Art, while a third is based on the Murray Atholl tartan, and the final is inspired by Gordon's love of tropical shirts.
Just 100 examples will be made, as with GMA's previous supercars. The coupe sold out very fast, and as the last non-hybrid GMA, we suspect the Spider will be just as successful.
Given the T.50 has just been signed off to enter production, the development and homologation process for the T.33 is due to begin imminently. Unlike the T.50, however, the T.33 Coupe and Spider will be road legal in the US. It's priced at £1.89m before tax (approx. $2.4 million), but the price in dollars will fluctuate based on exchange rates at the time of ordering.
Production will begin in the summer of 2025, after the regular T.33, which enters production in the fall of 2024.
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