I was in Toledo in early April and came upon a table run by Airman Wheels out of West Viginia. Airman Wheels makes some amazing aluminum rimmed wheels and his product was pretty darn close to the Me-109 F style wheel . A week after the show I contact Rex Chapman the owner of Airman Wheels (www.airmanwheels.com) to see if it would be possible to make a 6 spoke aluminum rim. I supplied him with some pics of the F style wheel and away he went. Several weeks later Rex had come up with the program to make these wheels. Please note his wheels are immaculate and with bearings. One spin and these wheels will keep spinning for minutes at a time. His standard wheel is 4 3/8 diameter and it comes with a ribbed tire. I had an extra set of ME-109G6 style plastic wheels (Sunshine Models in Germany) and he took the rubber off those, machined them and installed them on his rims. Work perfectly. The width of his wheels are 1" and the cost is $109 .00 per set. I did a quick analysis of the various wheels for weight comparison and attached some pics. I also painted one of Rex's rims black so you can see the spoke profile better as in the polished aluminum it is a bit difficult to see. The black rim has the Sunshine Germany rubber tire on it. It brings the diameter up to 4 1/2 inches. I did have at one time the first generation Glennis wheels but I know longer own them so I could not put a set in for comparison. For ultimate scale the Glennis would be the pick for an F model but the Airman wheels would come a close second in my opinion. If Rex could come up with a injection molded smooth foam wheel that was more like the original then it be an excellent solution . For now he has just the ribbed tire but will accomodate you if you have other tires to put on. The service was excellent.
Please note that I am remaking my wing for the CMP ME-109 with hot wire cut foam outer panels so that I can place the wheel in the proper location and thus I can accomodate the thicker 1" tire.
I hope this gives you some other options. Regards Tero T in Toronto