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The max tire width I can fit under the rear fenders is about 315. 315s only come in 18 inch wheels. I am currently running 295/50 so 295s will fit easily but the only size there is in a 19 inch wheel. Anything less and I start getting into tire diameters that are 1.5 inches or more under max...

Re: Mark\'s Xtreme GT40 First Drive Q & A Gary, The ERA manual states the bolts for the rear trailing arms should be at 45 degrees and angled towards the front pivot (not symmetrical). My suspension guru, who was drafted by Corvette Racing for causing their LeMans wins, tells me they should...

Does anyone have a compiled list of pin drive wheel manufacturers? My 15" wheels and tires are already obsolete ('cept for car shows) and I would like to fit some "Y" rated tires on the car. It's got to be 17" or more these days to get real tires. The two I know of are PS Engineering and...

Ron, I'm making a video to spoof the Cayenne commercial except we'll see the serenity of the Blue Ridge being shattered by a partially muffled race car engine in a GT40. Now is THAT cool or what? I am a repeat offender. I repeat, I will offend. Porsche will probably send a battery of...

Re: Mark\'s Xtreme GT40 First Drive Thanks for all the ego food guys. I'm not sure if my head can fit in the car now. Bill, the wheels are 15" PS Engineering that came with the car. Here's a better shot. To Peter on "over the moon", I believe I can now reach escape velocity :-). To...

Re: Mark\'s Xtreme GT40 First Drive Dave, The NACA ducts on this car are fully functional from the factory. Mark

<u>Xtreme Classics</u> Formula Car Style Chassis Alignment Laser String Box Laser Toe Gauge Laser Bump Steer Gauge Laser Scale Transit Computerized 4 Corner Scale System Xtreme Classics Paris, Va. 20130 (near Rt 50 & Rt. 17 on the Blue Ridge) 540-592-3030

Mark\'s Xtreme GT40 First Drive Words?

Yes it's $695 unless you want the advanced notification option. For $995 it will call you at a sequence of different telephone numbers if the car is moved. This way you don't have to wait until you come out of the restaurant and find the car missing to call the police.

After reading about 2 cars being stolen in one week (1 Lotus & 1 GT40) I've convinced myself I need a Lojack. But a call to Lojack Central and I am told I must let some fumble fingered knumbnuts install this thing in MY car. Is there any way I can get this item and install it myself or is...

I'm looking for the best material to use to simulate the driver's weight when setting corner weights and ride heights. Lead is toxic but easily available. Is there a better material, heavier, less toxic than lead but still affordable. Thanks in advance. Mark

Re: Xtreme Classics\' New Sill Extensions Bill, The next move has to be getting data from what has already been done. The cheapest wind tunnel time comes in around $800 and hour WITH a 6 hour minimum. Ouch! My Lambda meter has four additional inputs so I figured I could get linear...

Xtreme Classics\' New Sill Extensions Carbon Fiber rocker panel sill extensions for your GT40? Blasphemy? You decide. These little sweeties can be purchased for $750 USD (pair) with a 10% racer discount. They fit ERA, GTD, CAV, and RFGT40 models and do not lower your car. The bottom...

Good point Dave. There are other clearance issues too. On level ground with 6" ground clearance in back and 5.5" in front I can open the nose and the splitter clears. Anything less and it's the formula car quick jack just to open the nose. This is not an issue with me but it will be with...

Kevin, When I think of GT40s and diffusers this is what comes to mind: No full length venturi tunnels feeding a diffuser, just the diffuser. Granted this is less than optimal but since there is no room for tunnels it's the compromise we are stuck with. To be honest all I've done is...

Guys, Maybe having been "raised on Lotus" has altered my brain patterns but I have to ask "Why put up with lift?" My Lotus gets more stable with increasing speed. Call me spoiled but I expect the same characteristics from a higher performance car. Don't forget when you have that light front...

Joseph, I am attempting to get some wind tunnel time to fine tune the rear wing to be able to balance the whole car aerodynamically. I suppose I should get a single nostril to run also just to get some data. My design is supposed to turn the lift a GT40 normally sees into a modest amount of...

Joseph, Nice lookin' ride. 30+ years too retro on the aero for me though. Here's a more modern solution for front end lift: or: More Aero Pics Some GT40 Aero Facts Mark

Chuck, No pics of the sill extensions yet. That mold is being done at the same time as the CAV &amp; GTD splitter. I have not tried to see if they'd fit the flared sill. If you have a picture taken at sill level from the rear wheel well I might be able to tell. Or I have a small test...

We're ready to make a run of ERA, CAV and GTD splitters and sill extensions. Please call or email if you'd like a piece from this run. I'd suggest a deposit of $350 USD if you need to reserve one. Splitters are $850 USD and a pair of sill extensions are $750 USD. Customers outside the US...