My new 2021 F Type R has the standard 20" Style 1066 10 spoke wheels. It does not have any locking lug nuts, just the usual acorn style.

I tried a 21mm socket and it is too small large. I have a 3/4" socket (.75" = 19.05mm) but it is a bit on the loose side as is a 19mm so I don't want to risk rounding off the nuts. Can anyone confirm the correct socket size to use on the lug nuts ? It is not listed anywhere in the owners manual.

Also, the owners manual section about changing a wheel in case of a flat gives a torque specification of 92 ft./lbs for the lug nuts. My car didn't come with a spare, just the inflation and repair kit.
But 92 ft./lbs seems a bit high. Perhaps that is just for what I assume is a steel spare ? Typically alloy wheels should be torqued to ~ 80 ft./lbs.

Can anyone confirm the proper lug nut torque for the factory alloy wheels ?
I corrected my measurements
Thanks

 

Torque Specifications
DESCRIPTION LB-FT Stage 1:11 Stage 2:52 Stage 3: 92

 

doesn't make sense - 3/4 is ~19mm. So if your 21 is too small, 3/4 would also be small...
FWIW - my lugs are 19mm.

 

Thanks cstall. I had a brain fart on my math and corrected my original post.
21mm is too large, the 3/4" and 19mm sockets I tried are a bit loose. My 3/4" socket is from my dad's old tool box and is probably over 80 years old and may be worn. My 19mm socket is a cheap one and may not be of close tolerance. I'll buy a good quality 19mm multi-point deep socket and I'll bet that will fit properly.

- Rummy636: do your torque specs mean to first tighten all lugs in the proper star pattern to 11 ft/lbs, then go around and tighten them again to 52 ft/lbs, and do a final torque on all to 92 ft/lbs ?
And that is correct for the alloy wheels ? I worry about cracking or warping if overtightened.
Thanks again

 

19mm is the proper size.

Just make sure you use a quality socket. JLR took a page out of Fords' book and put cheap aluminum covers over the lugs. Using a rounded out or loose fitting socket will result in the caps being deformed and the socket being stuck.

 

Also be sure it's a 6-point socket, not a 12-point.

 

Yes. Perform star at each torque spec. It just center and seats the rims.

 

This. Buy a 6-point socket for this purpose and you'll never have any rounding issues.

 

It's also best to get a 1/2" drive sleeved socket, just like this one: https://www.ebay.com/itm/16299090819...AAAOSw0dJf4Ozt
I have used one of these for the last eight years and literally hundreds of wheel nut removals and refits and it is still going strong, with a 50 cm 1/2" breaker bar.
1/2" because you need a decent sized bar to get the 92 ft/lb (124 Nm in 21st century speak) torque and sleeved socket to protect your precious wheels.
Also the Jag wheels nuts are not acorn they are "mag seat", ie flat with a captive washer, if you fit acorn nuts to an OEM Jag wheel you are asking for trouble and/or damaged wheels.
Last but not least you should consider replacing the crappy OEM two piece nuts with solid one piece nuts such as Gorilla 73138J (chrome) or 73138JBC (black chrome).
Not cheap but infinitely better than OEM.

 

Excellent advice OzXFR. I have seen those sleeved sockets before but never tried them. On my previous cars I have seen some scratches on my wheels around the lug nuts that were undoubtedly caused when I had new tires installed. When the time comes for new rubber on my F Type I will make sure the shop uses a sleeved socket even if I have to bring my own.

I haven't pulled a wheel yet so was unaware of the type of lug nuts used nor that they were two piece. I'll look into the Gorilla brand.

 

Jaguars, OEM lug nuts are slightly tapered. And since it is a metal cap over a solid nut, JLR’s always recommends hand tightening their OEM tire iron works best because it also has a slight taper inside. It is approximately 19 mm. Important note: It is a flat seated flange to fit into the openings of OEM wheels with OEM nuts. MANY parts resellers are incorrect, selling 21 mm hex and even acorn bulge nuts erroneously! I prefer a solid wheel nut, but when I replaced all mine on my older X350 I had to buy one of the compact, folding four-way tire irons, but you don’t get a lot of leverage as you do with Jaguar’s solid, one piece tire iron. (They were 21mm hex even though Amazon said the fit was correct!) So I’m sticking with OEM size hex (19mm).