Atacama Yellow 35is build thread

My 35is is sitting down at the rear. The Ohlins ride height suggested is 367/367..against original of 378/367 mm.

Current set up is lower than that by some way.

Two compounding issues..

Ohlins only does one kit for all E89s..

28i manual is 1,750 kg with 47.3/52.7 distribution = 922 kg on rear (front 828kg)
35is is 1,895 kg with a 49.3/50.7 weight distribution = 960 kg on rear (front 935kg) and you wonder why the 35is doesn't handle as well as a N20!

In addition I carry a full size 326M front wheel in the boot when touring = 22 kg and toolkit = 10kg

Plus full fuel

And almost ALL the time roof down when hooning!

That's about 50kg or roof moving back say a metre

So with some bags and a full tank of fuel (BMW weights are zero fuel)

So the rear weight is over a 100kg more than a 18i/20i/28i on the rear wheels ie about 10%

In addition I'm going up to 245/40 19 and 285/35 19 onm my 437M wheels.


The 70nm rear Ohlins spring is jacked up about as far as it can go.

My 96 nm/mm rear springs arrived today from the States! Stock Ohlines in 70 nm/mm

Just discovered that Eibach do a whole series of these springs in various rates 60/79/88/96

https://www.eibachshop.co.uk/pages/eibach-racing-spring-catalogue
Going to fit these Eibach babies to help wth adjustment and reduce 'twang' and 'boing' from the springs.

We'll see how it goes..now I found the Eibach catalogue I can go to an intermefiate spring rate if required!IMG_3793.JPGIMG_0663(1).JPGScreenshot 2025-10-24 145451.png
 
It does look low at the rear but the car is facing up hill. Does it sit like that on flat ground?
 
B21 said:
28i manual is 1,750 kg with 47.3/52.7 distribution = 922 kg on rear (front 828kg)
35is is 1,895 kg with a 49.3/50.7 weight distribution = 960 kg on rear (front 935kg) and you wonder why the 35is doesn't handle as well as a N20!
Click to expand...
Surely those are GVW, not curb weights?
I know BMWs are heavy but surely no E89 can weigh 1,900kg dry?

Your car can't weigh over 2 tonnes by the time it is on the road? That's not possible.....or is it?

My 2013 E class merc estate only weighed 1800kg when fully laden with metal (on a scrappy's weighbridge).
 
The US brochure says 3450 lbs unladen which is 1563kg
 

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And with the 28i being around 1480 there only about 70kg between them instead of petes 145kg .
Even if these weights are dry there would be the same weight added to each filling them with fluids (almost)
 
Had a look in my owners handbook this morning and it states the for 35is.

Kerb weight ready to drive with 75 kg loads, filled up to 90%, without optional fittings. 1600 kg

Permitted gross weight. 1855 kg
Front axle load limit. 870 kg
Rear axle load limit. 1000 kg
 
Pondrew said:
Surely those are GVW, not curb weights?
I know BMWs are heavy but surely no E89 can weigh 1,900kg dry?

Your car can't weigh over 2 tonnes by the time it is on the road? That's not possible.....or is it?

My 2013 E class merc estate only weighed 1800kg when fully laden with metal (on a scrappy's weighbridge).
Click to expand...
Well spotted!
 
Nictrix said:
And with the 28i being around 1480 there only about 70kg between them instead of petes 145kg .
Even if these weights are dry there would be the same weight added to each filling them with fluids (almost)
Click to expand...
Yes yes yes workinng on it NOW!-:)
 
Chippie said:
Had a look in my owners handbook this morning and it states the for 35is.

Kerb weight ready to drive with 75 kg loads, filled up to 90%, without optional fittings. 1600 kg

Permitted gross weight. 1855 kg
Front axle load limit. 870 kg
Rear axle load limit. 1000 kg
Click to expand...
Got the message! Please!!!-:)
 
So rework off the numbers from the US 2014 Sales Brochure! Unladen Weight!

Converted in kgs

28i manual 1480kg 47.3/52.3 ratio
35is 1609kg 49.4/50.6 ratio

28i 700kg / 774kg
35is 795kg / 814kg

So the 35is is still 95kg heavier on the nose and 39kg on the rear

As discussed add spare wheel/tools etc and the rear is 32kg + maybe close to 50kg+ if the roof is folded in

ie rear load for me roof down with wheel / tools is 120+kg more than maybe Ohlins planned for!Screenshot 2025-10-25 121938.png
 
Complex self dug hole due to buying incorrectly some 285 rather than 275 by 35 profile rears for my 437Ms..

The 235/40 19 is tye wrong rolling circumference now..

So popped them off and put some 245/40 19s on..

Pic shows change in diameter of the two..quite noticeable..IMG_0697.jpeg
 
235/40/19 is the same rolling circumference as 245/40/19 though surely…?

235/35/19 is different rolling circumference to 245/40/19 no…?
 
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