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Discussion Starter #1
Just checking in to say I've had the 3.62 rear end fitted and oh my gosh, what a transformation,

I don't care what anybody says in the countless threads where people talk of there not being a real difference in overall acceleration from 0-100mph - I'm absolutely positive that my car right now will put lengths on a 3.15 M5 over the standing quarter.

The sheer brute force in the low gears at any throttle input is poetry. So sharp, so angry and the speedo sweeps so nicely. I was impressed with my last M5 which only had alpha N tune and cold air intakes, but this one I'm sure will be very special and super enjoyable on the street and highway. if anybody has any doubts about it - just do it. You won't regret it.

So far with this car, I have:
  • New Bosch lambda's
  • Alpha N tune
  • IAT relocation
  • 3.62 final drive
  • Nankang 295 30 18 AR-1 tyres
  • Adaptations reset
First gear, while short, is just a blur...I love it. Second gear is similarly fast and just sears it's way to around 60mph at 7300rpm. Third and so on...I love it. Traction in first gear is a bit hairy at WOT, but that's part of the fun, isn't it? Hence, why I am running such wide, sticky tyres. Highway driving is equally lovely...a light dab of the throttle is all I need to smoothly, but purposefully overtake cars. Light to medium throttle around town is so satisfying and so much fun.

Next up for me will be fresh spark plugs, cold air intake and then headers in the spring. If I can gain another 40hp at the top end with those, this thing will be sublime!
 

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Discussion Starter #3
I can't remember tbh. At a guess, somewhere around the 3000rpm mark. It's not a million miles off where it used to be and the car guzzles fuel no matter how it's driven. I'll try to remember to make a note of it and post back.

But don't think about it....do it.
 

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Just checking in to say I've had the 3.62 rear end fitted and oh my gosh, what a transformation,

I don't care what anybody says in the countless threads where people talk of there not being a real difference in overall acceleration from 0-100mph - I'm absolutely positive that my car right now will put lengths on a 3.15 M5 over the standing quarter.

The sheer brute force in the low gears at any throttle input is poetry. So sharp, so angry and the speedo sweeps so nicely. I was impressed with my last M5 which only had alpha N tune and cold air intakes, but this one I'm sure will be very special and super enjoyable on the street and highway. if anybody has any doubts about it - just do it. You won't regret it.

So far with this car, I have:
  • New Bosch lambda's
  • Alpha N tune
  • IAT relocation
  • 3.62 final drive
  • Nankang 295 30 18 AR-1 tyres
  • Adaptations reset
First gear, while short, is just a blur...I love it. Second gear is similarly fast and just sears it's way to around 60mph at 7300rpm. Third and so on...I love it. Traction in first gear is a bit hairy at WOT, but that's part of the fun, isn't it? Hence, why I am running such wide, sticky tyres. Highway driving is equally lovely...a light dab of the throttle is all I need to smoothly, but purposefully overtake cars. Light to medium throttle around town is so satisfying and so much fun.

Next up for me will be fresh spark plugs, cold air intake and then headers in the spring. If I can gain another 40hp at the top end with those, this thing will be sublime!
Are the 295 30 18 installed on the stock rear rim?
 

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Discussion Starter #7
I’ve been 3.62 since 2013 when I was in Germany. AutoBahn Beast! My Friends had twin Turbo Audi’s, Subaru STI’s and Porsche’s. Those Cars made more horse than me and got Smoke.
I can see why tbh. I was driving it this evening and the way it pulls in first and second gear is so beautifully forceful. On country roads, it's such a blast! At WOT from 60-100mph it reminds me of my E63 AMG when it was stock. Approx 5.5-6 seconds. The 60-80mph in that car was around 2.2 seconds. This car is in the 2.4 second range now. I believe stock is around 2.7 seconds. Looking forward to getting some CAI's now.

Are the 295 30 18 installed on the stock rear rim?
Indeed, just as Bimmerbear said, it fits, but with a bit of a bulge.


I took some speedo pics for you guys in 6th gear at various speeds, for reference:

Just under 90mph

http://www.ranarahman.com/wp-content/uploads/2019/10/20191021_211442-e1571708404982.jpg[\img]

Around 80mph
[img]http://www.ranarahman.com/wp-content/uploads/2019/10/20191021_211448-e1571708489733.jpg[\img]

Around 70mph
[img]http://www.ranarahman.com/wp-content/uploads/2019/10/20191021_211454-e1571708534635.jpg[\img]
 

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Cool.
Do yourself a favor and put on better tires on the car. Nankangs are junk.
 

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Discussion Starter #9
Do you even know what kind of tyre the AR-1 is? It's as grippy in the dry as the Toyo R888 :rolleyes:
 

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Do you even know what kind of tyre the AR-1 is? It's as grippy in the dry as the Toyo R888 :rolleyes:
Yes, I know AR1s. I guess junk was a bit of a strong word for it, but they are very average tires.
 

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I can see how it’s enjoyable until you reach 100/110mph. Past that, those forced induction guys will pull and eventually disappear.

for many years I wanted to get stock e39 m5 for daily and keep my S/C M5 for special occasions and this is what I’ll say. Once you go forced induction it’s difficult to go back. However, my F10 is probably the fastest thing I’ve driven, but being an M fan I have mixed feelings about the F10 being an M car and am now considering to go back to the v10 that I regret selling.

Didn’t mean to go off topic, but if anyone wants to begin the e60 and F10 debate, feel free to start a new thread.
 

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Discussion Starter #14
Celicasaur

What 3.62 rear end did you go with?
A guy on eBay was selling one that came out from his E46 M3 👍

Tacho pics again, seeing as I can't edit my post above:

Just under 90mph


Around 80mph


Around 70mph




I can see how it’s enjoyable until you reach 100/110mph. Past that, those forced induction guys will pull and eventually disappear.

for many years I wanted to get stock e39 m5 for daily and keep my S/C M5 for special occasions and this is what I’ll say. Once you go forced induction it’s difficult to go back. However, my F10 is probably the fastest thing I’ve driven, but being an M fan I have mixed feelings about the F10 being an M car and am now considering to go back to the v10 that I regret selling.

Didn’t mean to go off topic, but if anyone wants to begin the e60 and F10 debate, feel free to start a new thread.
True. Truth be told though, I'm an N/A guy and I'd not be happy if I used F/I on an engine as beautifully crafted as the S62. Besides, I have other cars which are better suited for going even faster, albeit with turbo's attached to them.

F10...yep, brutally fast when tuned (they trap over 130mph don't they?), but not as 'special' as the E39 or E60 M5s. I must admit, I'm getting a pretty bad itch for an E60 M5 nowadays. That high rpm surge from the S85 is the money shot! :) Modern cars just don't do it for me, no matter how fast they are.
 

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I am putting my F10 and e46 for sale. Replacement won’t be a shocker to many.
 

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You are headed towards the right direction
 

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Will be testing forced (TT) and N/A (GT3)
 

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Cool. F10 I don't really care much about. I don't know if I could ever let go of E46 again, though. I have done it 3 times, and every time I'd go and buy another one withing months (sometimes weeks) of selling. I think I will always have E46M in my stable.
 
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