I was wondering if anyone knew of the best route using a AONE4 ticket to gain the maximum number of miles and tier points possible (BAEC)?

Max miles and max tier points may not be the same. But something like this might get you max tier points:

CAI-LHR BA 180
LHR-EZE BA 180
EZE-GRU BA 180
GRU-EZE BA 180
EZE-GRU BA 180
GRU-MIA AA 180

(Separate R/T MIA-NAS)

NAS-PLS BA 180
PLS-NAS BA 180
NAS-GCM BA 180
GCM-NAS BA 180

MIA-LAX AA 180
LAX-HKG CX 180
HKG-CGK CX 180
CGK-HKG CX 180
HKG-CTS CX 180
CTS-HKG CX 180
HKG-LHR BA 180
LHR-DOH BA 180
DOH-BAH BA 180
BAH-DOH BA 180

hauteboy, that's a very interesting routing indeed. Do we have confirmation yet that the BAH-DOH segments indeed accrue 180 tier points? I remember someone in the BA forum mentioning he'd be flying that route in the next few months.

I remember someone confirming this not too long ago.. so I'm assuming the other BA shuttle segments (NAS-GCM/PLS) and GRU-EZE would earn longhaul as well?
Indeed it does... do a search for DOH on the BA forum. Also someone received 75 Tier Points for GRU-EZE in WT+, so 180 sounds correct

Not sure that you can embark at NAS, or vice versa. I've done LHR-GCM often and, yes, it does stop in NAS, but I've never seen anyone board there.

I just tried to make a dummy booking for NAS-PLS-NAS in F on ba.com (7/14 Nov). It comes up with a price of $853, which is not exactly great, but could be a nice tier point run if you need it and happen to be in the area. The AONEx tier point run makes more sense though. The NAS-GCM-NAS run prices at a slightly more expensive $859.25.

Just for the sake of completeness, GRU-EZE-GRU in F prices at $1508.99, and BAH-DOH-BAH at $516.82. For non-RTW tier point runs, it's only this latter that makes sense.

That trip looks OK. You might have to watch the stopovers but out and back on some should be OK. The BA rules are reasonably easy for interpretation of F = 180 with the 2001 miles plus rule. It is a bit more difficult for QFs with the 2701 miles and 5001 mile rules to take into account. In addition, the BAH-DOH shuttles in F would only count the same as J for QF as they are such short runs. However, the BAH-DOH does have the advantage of being an evening trip so you can still work the day in BAH, and if London based, get back on the same aircraft for BAH-LHR as you would have done anyway.

I have still to get to grips with the rules of the OWE, but I thought you weren't allowed to backtrack over the same routes (i.e. EZE-GRU)?

That was my instinctive reaction too after seeing hauteboy's itinerary, but I couldn't find any injunction against this in the star files.

There aren't any backtracking restrictions on OWE's, other than inter-continent and the segment limitations (eg, ANC, transcons, europe, etc).
Now if you started in GRU or EZE, you couldn't do those routes but otherwise you could do up to 4 legs. Complicated

I've never understood the concept of doing a OWE purely for Miles and Tier Points. If I am spending a considerable chunk of change on a ticket I at least want to enjoy the trip and have some sort of purpose around it. On my last AONE4 I went to South Africa, Australia and the US with the primary purpose of having a good time but with a secondary purpose of maximising my Miles. I am sure I could have earned more Miles and Points than I did but but I was happy with the result.

My next RTW is a DONE4. I am going to NZ for the Lions Tour and will do a couple of sidetrips out of HKG to get maximum tier points. Subject to BA keeping earning levels the same I will attain Gold and will be gaurenteed benefits for another two years. On this trip I am only making use of one of my 6 segments in the US as I don't have the time. The primary purpose of the trip is to go to NZ and the Miles and Tier points are mostly definatley a secondary considertion.

My advice would be to plan a trip that will give you the greatest enjoyment while adding a good amount of Miles and Tier Points to your account.

I wouldn't just be going on a Miles and Tier points run - Mrs Efin and I would certainly make good use of the trip to spend some time in each of the locations we visited . Would just like to make the best of any possible routings to make sure we both got the maximum tier points and miles for the trip.