The X4MR Relacment has arrived!!

jamiesecker said:
Beedub said:
jamie.....lets do a vmax day.... your m5 vs my z4mr-sc !!!! you have 40bhp more.......... i have a large weight advantage....... i reckon it'll be dead even, and down to the driver.

now that would be an interesting race ;-)

byron
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Byron,

That is a great idea, and would be good fun more importantly.
I am away with the military for the next month on and off but lets try to arange a venue and date!
Be great to get a passenger lap in yours.
ps. I better nip to DMS to get the limiter removed!!!!!
Just priced up some 20" Hartge alloys................Tubi system aswell...not for a few months mind
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definatly...... im up for it!!

check out this :-) i can vouch that these guys are the daddies

http://www.esstuning.com/categories/BMW/E60%7B47%7D61-5%252dSeries/M5/

mmmm transmission re flash as well !!!
 
Until the Z4MR goes I am not able to spend a bean??? she will kill me!!

But thanks for the link! And look forward to the meet.

Regards
 
Beedub said:
jamie.....lets do a vmax day.... your m5 vs my z4mr-sc !!!! you have 40bhp more.......... i have a large weight advantage....... i reckon it'll be dead even, and down to the driver.
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Weight has no bearing on Vmax (unless you run out of runway) -- it's all down to power vs drag. Cd on an M5 is a lot better than a Z4 (I think around 0.25 for the normal 5-series, probably a bit more for the M, vs about 0.35-0.4 for the Z). But OTOH the Z4 will have a smaller frontal area and maybe less mechanical drag due to smaller tyres.
 
carl said:
Beedub said:
jamie.....lets do a vmax day.... your m5 vs my z4mr-sc !!!! you have 40bhp more.......... i have a large weight advantage....... i reckon it'll be dead even, and down to the driver.
Click to expand...
Weight has no bearing on Vmax (unless you run out of runway) -- it's all down to power vs drag. Cd on an M5 is a lot better than a Z4 (I think around 0.25 for the normal 5-series, probably a bit more for the M, vs about 0.35-0.4 for the Z). But OTOH the Z4 will have a smaller frontal area and maybe less mechanical drag due to smaller tyres.
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dont be confused by the term vmax day,,,,, we will be accelerating from 30mph upto vmax...... lighter weight + more power = quicker aceleration to vmax speed......... no-one stated being lighter gives you a higher vmax speed?????
 
original guvnor said:
beedub are you able to get decent traction away from the line in the dry ?

:driving:
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if its really warm not to bad...... 1st will spin, 2nd you can hear the tyres chirping as you accelerate ;-)

you can modulate it very wel and move off the line crazy quick BUT..... i prefur runs from 30-130, a great indication of power and stress free for the drivetrain, mecanical sympathy is very important imo for the longevity of any vehicle.

i actually would love to see the general 0-60 scrapped and a 30-130 time introduced, its shows much more of a car performance.......
 
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