Great retortMr.B wrote:NISFAN wrote: ↑Mon May 28, 2018 10:58 amNo, our friend above was going on about the ratio of openings in the bumper to grille coverage being unacceptable. I pointed out that in this respect, the N55 engines cars were identical. Which they are your honour. Case closed.Jahjaman wrote:
So you're saying the N55 and the B58 use the exact same cooling system?
So you're saying that, as BMW went from the N55 to the B58:
- all the radiator components and designs are exactly the same on the B58 and the N55? That is, I can go on to realoem.com and find that the radiator in the N55 has the same part number as the radiator in the B58?
- the air to water intercooler in the B58 doesn't have an additional low temp radiator and it's own coolant circuit that the N55 never had?
Good job.
Good thing you’re not a lawyer either.
The notion is totally bizarre anyway, as since the dawn of internal combustion engined cars, you had an exposed radiator......erm, yes that’s how they work.
I’ll enter exhibit A - a model T Ford, without stone guards.
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The model T radiator is made from a suitably robust material and therefore doesn’t require supplementary protection.
I’ll enter exhibit B - a radiator from BMW that needs supplementary protection as it’s made by Cadbury’s![]()
Please also observe exhibit C - BMW Rock Guards which they are now fitting to 1, 2 and 3 series cars as supplementary radiator protection. Also available as a retrofit kit from BMW.
It makes no difference that the grill was adequate for N55 radiators, it clearly isn’t adequate for B58 radiators.

Again, it’s not the grille that is the problem, it the construction if the intercooler core. Maybe they should use Toblerone chocolate, as it seems harder than Cadbury’s?
Or just fit a grid shaped cover that specifically protects the tubes.......the rock guard.
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