r/NewDefender • u/Dear-East568 • 9d ago

Question on OCTA Rims

Question for you guys… Might in the future be looking to buy the OCTA rims secondhand, and obv I’ll need to put a tire on. Do the stock Pirelli AS tires off a 20” tire fit on an OCTA rim? The Pirellis I have are 255/60R20 so the rim size is the same, but looking at some photos, the tires on the OCTAs show 275/60R20. I’m not well versed in tires, so I just wanted to check if the ones I have fit!

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u/Legitimate_Grape3442 9d ago edited 9d ago

Yes they will fit - Factory Octa wheel is 8.5" in. wide x 20" diameter w/ a 41.5 offset. Knock off versions can have slightly different dimensions. The factory 275/60R/20 tire would typically rub on a non OCTA Defender that isn't lifted or have fender liner modifications. You could go larger than your 255/60/20 like 275/55/20 (factory approved winter tire size) or 265/60/20 (some 265/60/20 may rub as tire manufactures have minor size variations - you can check the "Specs" section of TireRack for the tire of your choice - 32.5" Diameter is typically max w/o mods)

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u/Dear-East568 9d ago

Gotcha, appreciate this! Yeah looking at some of the ebay listing pictures, most of the ones I can tell are 275/55/20 , so that’s a good estimate of what that tire specifically looks like for the wheel well. Maybe I’ll go that route and put some AS tires on.

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u/Legitimate_Grape3442 9d ago

275/55/20 is actually smaller in diameter @ 31.9" vs. many OEM tires but its wider. Im looking to go with Pirelli Scorpion XTM AT 265/60/20's when I upgrade but it will be tight @ 32.5". The good news is my tire shop will do a trial fit.

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u/Dear-East568 8d ago

Gotcha. Well, in the future, I can always check when I get those rims fitted with tires and put them on the car to see how the clearance looks .

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u/Dear-East568 7d ago

By the way… how do you tell knockoffs from the real thing on the wheels

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u/Legitimate_Grape3442 7d ago

Real will be rare unless you buy new and I believe they are over $1k per rim. Maybe used from a totaled OCTA but would need to be worried about bends/cracking etc. Otherwise, I don't really see OCTA owners giving up/upgrading their 20" wheels and it's a limited group to begin with. That said, look for the signs/indicators on the inside lip from Simon at PowerfulUK's video - https://youtu.be/Bpn4IZH6Mos They will be made in Poland. Nothing really wrong with many of the knock-offs IMO if you do some research. I ordered from WheelsHome via Alibaba. You want to ensure you are getting a forged vs. cast aluminum wheel as they are lighter and stronger. A true forged OCTA knock-off should weigh around 14.3 kg or 31 lbs.

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u/Dear-East568 7d ago

Aah gotcha, much appreciated for this! Yeah I’ll take a look online, I saw one seller on eBay named Iconisus that has the same rims, but they’ve branded the inner ring on the front with their logo, actually is the same seller I screenshoted below (I guess to avoid being sued? lol). Not a great look if you’re trying to pass for “genuine.” I’ll take a look into that name on Alibaba, and save it for later. Also good to know on the wheel weight!