3rd gen G29 BMW Z4 (2019-202X)

[justbake]

The redline on the Z4 is 6500 and from the promo vis at Goodwood, the redline on the Supra is 7400+

Again, could just be testing, and we'll know more later this week if they plan on giving us a little more detail.

I am still kinda curious about that since, excluding the S55, the BMW inline 6 family chokes after 6500 because of head and turbo(s). So I wonder if that means the Z4 is sandbagged from the factory, the Supra has a bigger/different turbo, or a combination of both since I'm assuming they wont have different heads.

Sponsored

 

[Modal170]

I'm not sure if they specified the Z4's horsepower rating but if this is the euro-spec, it could be doing a 7:55 with the restricted 340 HP configuration (vice the 382 HP configuration).

For added reference points on modern ring times, the 300+ HP Honda Civic Type R can lap the ring in 7:43.

Euro-spec is 335 with the filter

Someone on youtube noted that the brakes were vibrating harshly and suggested they weren't for track use, combined with the straight away of the car going 260KMH at one point. Said BMW is obviously sandbagging on the ratings. I think if all the above is correct and was a EU spec, the Z4 can crack a 7:45 with proper brakes and a US-spec engine and a master driver behind the wheels.

 

[Modal170]

I am still kinda curious about that since, excluding the S55, the BMW inline 6 family chokes after 6500 because of head and turbo(s). So I wonder if that means the Z4 is sandbagged from the factory, the Supra has a bigger/different turbo, or a combination of both since I'm assuming they wont have different heads.

Nothing's confirmed and I'm going to butcher it, but mrram noted the new Z4 engine doesn't have the same setup and path the B58 does. This suggest the engine was played with, and adding credibility to the Yamaha rumor.

 

[tfoxyr]

let's hope the toyota counterpart has more performance than that , that was kinda sad for the z4 after all this "development"...

 

[MA617M]

You would certainly hope the Supra could do it faster than a Civic...

 

[tfoxyr]

You would certainly hope the Supra could do it faster than a Civic...

civic does 7:43 while able to fit 4 people just fine , being fwd and developed by 1 company while being relatively cheap for the performance it gives. I mean kudos to honda but that isn't flattering for the z4.

 

[Nurburgring]

As an avid `ring fan and benchracer, my comments:

Don`t compare Sport Auto Nurburgring laptimes to "manufacturer" laptimes, owners laptimes, Wikipedia laptimes and even other mags laptimes. Sport Auto is considered the standard because: They run the full course Nordschleife (not just a segment of the track as most others do, usually called "bridge to gantry" laptimes) and the cars they test are always bone stock (manufacturers cheat more often than you think - tires, weight, boost, alignment, etc).

Having said that, an Euro-spec Z4 (down 40hp+ from the rest of the world version) putting down 7:55 is pretty impressive. These are other results from SportAuto to compare, no bullshit here:

Porsche Cayman S (718) 7:46
Audi TT-RS 7:48
Lotus Exige S (V6) 7:53
BMW Z4 M40i 7:55
Ford Focus RS 8:06
Mini John Cooper Works 8:28


Last gen Z4 would fall off-the-chart slow with the same power. They made huge progress on the chassis. Still, the car is understeering visibly in some segments. The Supra, with a more aggresive suspension setup and lower weight will probably land on par with the Cayman S laptime, which seems to be the benchmark Toyota has had since day 1. It will not be close to a 911S, that is clear by now.

 

[dshandy]

If the prototype Supra was weighing just under 3000lbs with 350hp and running a 3.8 0-60 as A70 stated, then I don’t see why it couldn’t run the Ring 5-10 seconds quicker than the Z4. After all, lap times really do depend on weight, suspension setup, and the driver.

 

[SS900]

Nothing's confirmed and I'm going to butcher it, but mrram noted the new Z4 engine doesn't have the same setup and path the B58 does. This suggest the engine was played with, and adding credibility to the Yamaha rumor.

You have to stop thinking like that. Let’s just compare z4 to Supra since we know they are both using the same engine. We don’t need to worry about what engine, i’m Just comparing apples to apples at this point.

 

[SS900]

The RWD M2 did a 4.0 with the N55Tu (365hp - DCT) and the RWD 240i with the B58 (335hp - ZF8) did 4.3.

3.99 is possible

That’s all white noise. The car to look at is the Z4.

 

[SS900]

I'm guessing and hoping that the 4.6 seconds mark is based off the EU 335hp number and maybe if the US version is indeed 380hp it'll be closer to 4.2-4.3. If so then the weight difference and suspension tuning can bring down another .1-.2

That’s a great point but I don’t think 40hp+ will make that big of a difference in the 0-60 times.

 

[SS900]

If the prototype Supra was weighing just under 3000lbs with 350hp and running a 3.8 0-60 as A70 stated, then I don’t see why it couldn’t run the Ring 5-10 seconds quicker than the Z4. After all, lap times really do depend on weight, suspension setup, and the driver.

Keep dreaming about the 3,000lbs and under 4 seconds 0-60.

 

[dshandy]

I never said that was production spec, A70 said that was the prototype testing early on. I'll be a firm believer until I hear otherwise. If you have any valuable information that you'd like to share then please be my guest. I get it, in the end, this is all hearsay but I'll believe credible sources on this forum until I'm proven wrong.

 

[2JZ-No-Sh*t]

I'm guessing and hoping that the 4.6 seconds mark is based off the EU 335hp number and maybe if the US version is indeed 382hp it'll be closer to 4.2-4.3. If so then the weight difference and suspension tuning can bring down another .1-.2

Yes you are correct. BMW USA press release says under 4.4 seconds.

http://www.bmwusanews.com/newsrelease.do?id=3292&mid=

Power for the new Z4 M40i First Edition Roadster is provided by an uprated version of BMW’s iconic 3.0 liter inline 6-cylinder engine producing enough horsepower and torque to propel the BMW Z4 M40i from 0-60mph in under 4.4 seconds (estimated).

That’s a great point but I don’t think 40hp+ will make that big of a difference in the 0-60 times.

Also correct, just .2 seconds differences.

 

[A70TTR]

It did an unofficial 7:40 when I was still there and they said it still had some left in it lol. That was a long time ago though.

Later on, I think after I left, Moto-san said it kept up with a 991 Carrera S last he heard, which is around a 7:38 iirc.

No clue where it sits now...

Sponsored