2.0 sdrive to 2.8i performance. ?
- Thread starter brittas
- Start date
stuartinzg
Active member
I've given up looking at the MPG, I turn it off. When the fuel light comes on, I put fuel in - that's it !
Interesting list pricing BMW has for the e89 18i, 20i & 28i M Sports.
There's £1,500 between a 18i and the 20i When you consult Real OEM the only decernable difference in kit and mechanical spec seems to be a remap. Now even by BMW's standards that's a bloody expensive remap!
Between the 20i & 28i there's a whopping £4,500. All you seem to get for that is some different injectors, bigger brakes, dimming rear view mirror and once again a remap!
When you consider the software changes (remaps) and the injectors with different spray/flow injectors specs would cost BMW nothing over similar, its great profiteering on their part. Makes the bigger brakes and dimming rear view mirror on the 28i look extremely expensive at a £6,000 premium! For that I'd want 6 pot carbon brakes all round!
You really do have to congratulate BMW with their product placement/marketing on this. Not seen a trick this bold in the car market since Porsche convinced the world it should pay a £5-6,000 premium for a mechanically identical Cayman over the equivalent Boxster model. Interesting as the rest of the automotive world charges you more for the convertible versions of cars, including Porsche themselves when you come to think of it with their 911 models. Hasn't hurt Cayman sales though!
There's £1,500 between a 18i and the 20i When you consult Real OEM the only decernable difference in kit and mechanical spec seems to be a remap. Now even by BMW's standards that's a bloody expensive remap!
Between the 20i & 28i there's a whopping £4,500. All you seem to get for that is some different injectors, bigger brakes, dimming rear view mirror and once again a remap!
When you consider the software changes (remaps) and the injectors with different spray/flow injectors specs would cost BMW nothing over similar, its great profiteering on their part. Makes the bigger brakes and dimming rear view mirror on the 28i look extremely expensive at a £6,000 premium! For that I'd want 6 pot carbon brakes all round!
You really do have to congratulate BMW with their product placement/marketing on this. Not seen a trick this bold in the car market since Porsche convinced the world it should pay a £5-6,000 premium for a mechanically identical Cayman over the equivalent Boxster model. Interesting as the rest of the automotive world charges you more for the convertible versions of cars, including Porsche themselves when you come to think of it with their 911 models. Hasn't hurt Cayman sales though!
Z4M-2006 said:
Wasn't too surprised to be honest, what did surprise me is they usually dress it all up a bit bettter to be not so obvious/confuse consumers etc. But here it blatant!
Shows what I know, I was convinced back in 2006 Porsche would never get away with its Cayman pricing and would quickly have to realign it to at least bring it in to line with the Boxster, if not cheaper as it really should be in terms of manufacturing costs. How wrong I was!
Got my hands on torque graphs from a mapped 28i, stock 35i & my 35iS from the same (consistent) rolling road.
Thrust graph agrees with you. All 3 cars will be tyre limited in 1st. In second the 28i & 35iS should then leave the 35i in the dust but there's no way the 28i can live with the 35iS' extra 65ps.Twin Turbo said:
Z4M-2006 said:Yea.....
But we all know coupes are worth more than roady's eh......
True, very true in fact! But you Coupe owners are cheap and don't like paying the extra for the full beans convertible brand new! 
Seriously though the Z4 is a good example of how it normally works. In 2006 a 3.0si Coupe Sport Manual was £32,000 new where the roadster was £34,000.
It is interesting how the Z4 Coupes have bucked the normal used value trend, 3 series cab's for example are always worth more than the equivalent coupes (unless its a CSL) etc.
Must be the Z4 Coupes rarity, because we all know the roadsters are vastly superior!!!
Twin Turbo
Active member
techathy said:Got my hands on torque graphs from a mapped 28i, stock 35i & my 35iS from the same (consistent) rolling road.
Thrust graph agrees with you. All 3 cars will be tyre limited in 1st. In second the 28i & 35iS should then leave the 35i in the dust but there's no way the 28i can live with the 35iS' extra 65ps.Twin Turbo said:
Many thanks, so we have first we had Belief, Technical agreement and now need actual proof roll on Santa Pod
But I think in 4th & 5th I think 35i will gain ground back - However your graphs seem to contradict that belief
But many thanks, an fountain of knowledge
Twin Turbo
Active member
Marky Mark said:How much would you call a shed load of economy I've had my 28i almost a year and probably average around 25mpg on a normal week.SO8 said:
The car does 20 miles around town and 80 miles on a decent run with a few stops and roundabouts. I would be very interested how your 35is would compare.....
Cheers..
Economy is down to three facts
Car
How you drive
Environment
When I had my 335i I was averaging 24 Mpg and on an good run might get 38mpg, my 28i average around 30 Mpg and good run be in the 50 Mpg area.
However I am going around 6,000 less mileage and petrol prices and plummeted - great time to have an eco car lol . Should be having an 35is!
So I estimate I am saving around £2,000 before tax per year - taking on factors insurance, warranty costs, fuel car tax
I can't see how it can claw back speed given that the only place the 35i has a PWR advantage is right at the top end of its rev range beyond peek power & at a lower PWR than the 28i's maximum. This means that correct gear change points will neutralise the 35i's advantage, though there will be points where the 35i will be accelerating faster than the 28i at the same speed. The 35iS carries all is PWR advantage above the 28i's maximum so it can be translated into a real performance advantage.Twin Turbo said:
