145-in my z
186-04 suzuki gsxr 750 it nearly took me 2 miles or more to slow down to about 70mph i had my helmet basically sitting on the gas tank thank god no cops patrol highway 14 going from lancaster to california city

 

You just gotta love being tucked in behind that wind screen lol

 

lol i know man it just sucks trying to look threw the helmet and windscreen being that tucked but best adrealine rush i ever had im sure its the same with you got love them gixxer

 

I could never see myself going that fast on a bike, I'm sure it's quite the rush, though.

 

170ish in a 360 challenge stradale on track, 168 in my ol' srt-4 on turnpike. Honestly, both were smooth as silk...which I think is the scary part. now fastest acceleration...now that is different - GT2871s on a 01 s4 avantwagon done very very right...Oh My GOD....mind bending...made every car including full track prepped race cars feel slothlike...

bout 150 in the z, btw, not as stable as either of the previously mentioned two.

 

160 mph in a stock 2008 350Z on the A60 Autobahn. I was in 6th gear at 5,750 rpms. Car felt very stable.

 

I got up to 156mph, but then got pulled over doing 150 with radar in hand....never again.

 

the fastest i ever done personally driving was around 165~ in my father's stock acura NSX

i had a turbo'd RSX type S... topped the speedo @ 160~ few times..


sad to say that my father's 15 y.o. car felt more stable then my 4 y.o. car at any speeds

 

139

 

i raced a honda s2k on the 5 and did 140 prolly wont ever do that again

 

135 in my friends 65 Monte carlos
110 in my z

 

160ish Lamborghini countach (friend of familys car)

143 nissan maxima se (2000 turboe'd)

150 my Z

 

150 in the Z on the autobahn, couldnt get myself to try to go any faster

 

Hit 150 the other day, stopped bc there was some wind blowing. Car felt very stable and smooth at those speeds given the gusty conditions.

 

around 165 every weekend in the latemodel.

 

took it up to 126 yesturday and it seemed like it wanted more lol

 

That's a negative. All BMW's are limited to 155 mph standard and as far as I know there are not enough modifications, let alone any programs, for it to remove the limiter or to allow the 645ci to hit 180 mph. So I'm going to say BS. Also the 645ci is much heavier and slower than a 350z. Not many bolt on guys in this thread have gone over 160. What makes you think the 645ci can? For proof also I've driven a 650ci 09 convertible to its limits and can honestly say it's not faster in no way than my 06 Z.

 

+1 on that, I got my 69 Shovel up around that speed... how do I know? No mirrors and no speedo, cop was behind me for like 5 miles. I pulled over at a gas station and was like wtf when he pulled up next to me, ha. He was cool about it tho, we ended up talking about his drag bike he raced on weekends.

as far as the Z goes about 120ish (I really wasn't looking at the speedo and on a well known stretch of interstate, no traffic) and it felt good at those speeds but years of "using up my 9 lives" keeps me closer to the posted speed limits.

128mph in my SVO - but that was in the 1/4 mile...
oh and 10mph in my daughter's Princess FJ Cruiser (24v) heh.

 

I did 145 in my old RX8, felt very smooth at high speeds.

Only 120 in the z, so far...

 

You pulled over? When you're going that fast, might as well try to make the next exit if they're still pulling out!