Fun Fact.

"The Crazy Kanuck; RIP Oppositelock" (jukesjukesjukes) 08/05/2017 at 23:27 • Filed to: None

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The Pontiac Grand Prix GXP has staggered wheels.

2005 GXP pictured.

The fronts are 255/45r18, rears are 225/50r18

Maxima Speed > The Crazy Kanuck; RIP Oppositelock 08/05/2017 at 23:33

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That’s odd I wonder why? Why would you have smaller tires on the front of a FWD car. Granted it’s only sidewall height not width. Any ideas?

The Crazy Kanuck; RIP Oppositelock > Maxima Speed 08/05/2017 at 23:37

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The wider wheels are in the front, the first time I’ve heard of this.

HammerheadFistpunch > The Crazy Kanuck; RIP Oppositelock 08/05/2017 at 23:48

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I remember this, it was a desperate attempt to balance the handling after stuffing a transverse v8 up front. If i remember the reviews it actually kinda worked.

http://www.caranddriver.com/reviews/pontiac-grand-prix-gxp-road-test

CB > Maxima Speed 08/05/2017 at 23:51

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Wider wheels on the front are probably since it’s FWD V8 with 300 horsepower. As well, sidewall height is represented as a percentage of tire width, so they’re actually not too far off (115 mm for the fronts, 113 mm for the rears).

HFV has no HFV. But somehow has 2 motorcycles > Maxima Speed 08/05/2017 at 23:52

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Sidewall “size” is actually a percentage of the width. So a wider tire with a “smaller” rated sidewall actually could have the same sidewall hieght as a narrower tire with a “larger” sidewalk rating.

I checked a tire size calculator and in this instance the front tires are only .2 inches taller overall. And .6 inches larger in circumference. If the tires had the same sidewall rating the difference in overall size would be larger,

Steve in Manhattan > The Crazy Kanuck; RIP Oppositelock 08/05/2017 at 23:58

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Wow - I’m ... staggered!

Thanks folks - two shows tomorrow night, and don’t forget to tip your waitrons!

FTTOHG Has Moved to https://opposite-lock.com > The Crazy Kanuck; RIP Oppositelock 08/06/2017 at 00:08

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There’s all sorts of fun facts on these - they also used a remote water pump to reduce the overall length of the motor and get it to fit transversely in there.

The Crazy Kanuck; RIP Oppositelock > FTTOHG Has Moved to https://opposite-lock.com 08/06/2017 at 00:11

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Looks fun to replace.

HFV has no HFV. But somehow has 2 motorcycles > FTTOHG Has Moved to https://opposite-lock.com 08/06/2017 at 00:12

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That looks expensive

HFV has no HFV. But somehow has 2 motorcycles > CB 08/06/2017 at 00:12

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Your explanation is simpler than mine

FTTOHG Has Moved to https://opposite-lock.com > The Crazy Kanuck; RIP Oppositelock 08/06/2017 at 00:16

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They stuffed an SBC sideways into an FWD car. Nothing in there is easy to replace:

The Crazy Kanuck; RIP Oppositelock > FTTOHG Has Moved to https://opposite-lock.com 08/06/2017 at 00:19

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Not as bad as the guys who stuff them in Fieros, making them more impossible to work on.

AMGtech - now with more recalls! > HammerheadFistpunch 08/06/2017 at 00:31

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Just make the tires bigger. Also a huge reason why modern cars weighing twice as much as old cars handle so much better. Tires are everything.

FTTOHG Has Moved to https://opposite-lock.com > The Crazy Kanuck; RIP Oppositelock 08/06/2017 at 00:35

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Fair enough. But at least in a Fiero you already expect to have it up on a lift to do simple things. Interestingly enough, these LS4's also seem to find a home longitudinally mounted in things like RX-7's where the full-length small blocks are just a little too tight.

Manwich - now Keto-Friendly > FTTOHG Has Moved to https://opposite-lock.com 08/06/2017 at 01:10

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The oil cap looks easy to replace.

pip bip - choose Corrour > FTTOHG Has Moved to https://opposite-lock.com 08/06/2017 at 01:29

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GM engineers job description has to be “must hate customers”

to design that pump and this hose

Nibbles > FTTOHG Has Moved to https://opposite-lock.com 08/06/2017 at 01:46

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The rear doors open 112!degrees for ease of operation

It’s the only car (GTP)to get the L26 3800 Series III supercharged engine

Parts of it were used for the Solstice (along with parts form the GMC Envoy)

It was the fastest domestic V6 on the market

It had a built in G-meter

The aluminum V8 weighed less than the V6

The wheels and tires were staggered to compensate for the 64/36 weight distribution

Aaron M - MasoFiST > The Crazy Kanuck; RIP Oppositelock 08/06/2017 at 07:06

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Out of the four LS4 cars, the Pontiac was the only one to have this suspension setup. As such, it’s the only one you’d realistically want to buy; the handling of the Impala and Monte Carlo SS with this engine can be iffy, and that’s being incredibly generous. The Buick with the engine had it detuned.

shop-teacher > Steve in Manhattan 08/06/2017 at 07:58

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How’s the veal?

Maxima Speed > HFV has no HFV. But somehow has 2 motorcycles 08/06/2017 at 08:44

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Cool did not know that.

FTTOHG Has Moved to https://opposite-lock.com > Nibbles 08/06/2017 at 10:29

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I think the main reason you don’t see many of these around anymore is that aluminum block - the LS4 was basically an aluminum block version of the ubiquitous 5.3 Vortec. So it’s pretty sought-after as a V8 swap engine for all sorts of things due to the lightweight block and everything else shared with the Vortec being cheap to replace.

Steve in Manhattan > shop-teacher 08/06/2017 at 14:59

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Great!