E92 M3 vs. i8

[GeorgeA]

Originally Posted by roastbeef

i agree. i think that car is always going to tend to understeer no matter who is driving it though. i'm only guessing how the car handles because i don't have any experience driving one. the i8 was out of it's element is all i was trying to say.

Ahh I see what you’re saying. I wonder how it would do with wider and sticker rubber.

Maybe someone should do an i8 track build for fun and let us have a go in it

[roastbeef]

its difficult to find pics of one with the wheels off, but it doesn't look like they have much room for wider tires. big gaps make for bad aero, so i doubt bmw left much room anyways. its just not that kind of car.

[Longboarder]

I did some instrument accel testing of my i8 and second e92 (stock). The i8 has more grip off the line esp in wet for sure but in the dry they are pretty even on the 0-60, 1/4 mile and trap speed. Both around 4 flat 0-60 (1-foot rollout), 12.4@113 mph on the vbox and dragy. Although launching the M3 is much more difficult and getting those numbers takes careful prep of rear tire pressure and careful execution of the launch technique (i have literally thousands of launches on this platform). Launching the i8 is simple. So for most people in most situations, don't attempt to race one from a stoplight unless you know what you are doing.

The M3 would lap the i8 at just about any track. I take some sweepers in the low triple digits with the M3 (stock with GMG alignment+Cup2's) where the i8 was fighting me at 75 mph. Steering on the i8 is terrible. Transitions are pretty good and instant torque will make you an auto x king like a Tesla Model 3. Who cares about Auto X tho. And you think the stock M3 brakes are bad? Wait until you are 130mph and try to stop in the i8. Almost shite my pants. I would bet that if I even tried to do one fast lap with the i8, the tires and brakes would melt. The i8 used as the Pace Car for the electric F1 has AP racing brakes, different wheels/slicks, and suspension upgrades for sure.

The i8 is an enigma. I had it for a purpose of driving to work only. For that purpose it was a nice car like a Prius is a nice commuter.

[FrozenE92M3]

Originally Posted by TrAcK TRaP

Stock m3 (E9X) cant do 200 mph you are dreaming..

Uk ok, well I had mine up to 202mph with only an intake and no tune at sea level and a perfectly flat road but ok.

[SAMM3Y]

Originally Posted by FrozenE92M3

Uk ok, well I had mine up to 202mph with only an intake and no tune at sea level and a perfectly flat road but ok.

Maybe if you had 24" rear wheels with a 40 profile tire and 7 miles to do it in downwind in a hurricane you'd get there but regardless of what your Speedo said an m3 isn't doing 202 😐

[TrAcK TRaP]

Originally Posted by SAMM3Y

Maybe if you had 24" rear wheels with a 40 profile tire and 7 miles to do it in downwind in a hurricane you'd get there but regardless of what your Speedo said an m3 isn't doing 202 😐

[TrAcK TRaP]

Originally Posted by FrozenE92M3

Uk ok, well I had mine up to 202mph with only an intake and no tune at sea level and a perfectly flat road but ok.

After that you woke up and said what a great dream it was...

[FrozenE92M3]

Originally Posted by TrAcK TRaP

After that you woke up and said what a great dream it was...

Well realistically it was about 180-190 since our speedos are purposefully inaccurate. for example when I'm driving on the highway at 80mph, my GPS speed shows 75mph.

I didn't use my GPS during this top speed run but when the speedometer hit 200 it pulled a little further to what I can guess is 202mph at which point I let off.

But yes realistically I was going 185 maybe 190mph.

[Longboarder]

Originally Posted by FrozenE92M3

Uk ok, well I had mine up to 202mph with only an intake and no tune at sea level and a perfectly flat road but ok.

I thought the car was governed to 155mph without a tune to eliminate the top speed nanny. Regardless of your top speed, you clearly went much faster than 155.

[roastbeef]

Originally Posted by FrozenE92M3

Well realistically it was about 180-190 since our speedos are purposefully inaccurate. for example when I'm driving on the highway at 80mph, my GPS speed shows 75mph.

I didn't use my GPS during this top speed run but when the speedometer hit 200 it pulled a little further to what I can guess is 202mph at which point I let off.

But yes realistically I was going 185 maybe 190mph.

Originally Posted by FrozenE92M3

Uk ok, well I had mine up to 202mph with only an intake and no tune at sea level and a perfectly flat road but ok.

So you didn't then.

[FrozenE92M3]

Originally Posted by roastbeef

So you didn't then.

True, so I didn't then. I'll take the L. But I did peg the odometer needle!

[akkando]

Originally Posted by FrozenE92M3

True, so I didn't then. I'll take the L. But I did peg the odometer needle!

That's still impressive. I was assuming stock it would tap out at like 185, which is still pretty damn fast.

[Eja144]

I've read that 305 km/h has been documented in a stock E9X. So 189 mph. I can't imagine what that feels like, though probably less violent than 140 in my old turbo DSM car with the broken sunroof latch.