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I guess I was a little late here Stuart as the nuts I put in my last post are the same 19mm as the stock Jags. No need to get another lug wrench. By the way I checked the torque and it is 125nm or 92 lbft
Just another observation that may or may not be causing a problem. The lug nuts are 19mm but can be mistaken for 3/4" . So some mechanics might think and use a 3/4" socket because the fit is very close. That combined with an air gun would have a tendency to stress/wear the hex corners and eventually either round them of and loosen the shell of the nut. Just my thoughts.
THIS is the fundamental problem- do a survey, I doubt many tire shops own a 19mm deep impact. And once you use a 3/4 you have fkuced the nut. How can you be sure that no one has ever used the wrong size on your wheel. I doubt anyone has ever balanced their tire at home.
BTW most non technical folks- i.e tire folks, think that 19mm and 3/4 is the same thing- its not.
I can never work out what American members do with their 'lug' nuts.
Across every model forum you can read endless posts about stripped caps and fitting alternative aftermarket nuts. Almost exclusively, these posts are from US members even though we have a large International membership.
I have all the wheels off my cars twice a year for a thorough clean and inspection and have never had a wheel nut fail. It's been the same from my first E-Type over forty years ago through owning examples of most intervening models of Jaguar to my current XK. If they were going to corrode and fail then they certainly would in our UK climate!
However, I do remove/refit them by hand with a spider and torque them up to the correct setting. Taught this many years ago when I worked for a Jaguar Independent and still do the same to this day.
Are you all using air guns on the wheels?
Graham
Cheers mate, an expat here in the states. Your answer confirmed what I had suspected. They are rather loose here when it comes to precision. The 3/4 inch sockets are stamped with 19mm on the other side. There is a half mm difference between the two. Which in my opinion happens to be enough to round the thin outer jacket on the wheel nut.
Q&C,
0.75" is 19.05 mm ! you are off a decimal point!
My tool kit has both; but I can't feel the difference between the two and my caliper can't measure the difference; however, I do use the one marked 19mm!
"I may not be accurate but I least I slow!"
Q&C,
0.75" is 19.05 mm ! you are off a decimal point!
My tool kit has both; but I can't feel the difference between the two and my caliper can't measure the difference; however, I do use the one marked 19mm!
"I may not be accurate but I least I slow!"
Have a nice day, Adrian
First i always use a 6 point socket as the 12 point makes it easier to round off the corners. I do feel a difference between the 19mm and the 3/4" socket. If you want to get a better fit and not mar your nuts then take a piece of a plastic bag and slip it over the socket and press some of it into the socket. This will protect your nuts and make the fit much tighter.
Disclaimer: This post is not for children's eyes
The $20 nuts arrived today, but I won't be able to try them until next weekend. (If I don't like 'em, I'll put them on my Lexus, as it has the goofy two piece design as well.)
Q&C,
0.75" is 19.05 mm ! you are off a decimal point!
My tool kit has both; but I can't feel the difference between the two and my caliper can't measure the difference; however, I do use the one marked 19mm!
"I may not be accurate but I least I slow!"
Have a nice day, Adrian
Hi Adrian,
I said the same thing, half mm difference.
But I am changing my theory, you cant strip a 19mm nut with a .75 socket. So it must be that the tire guys are using a 19mm on a .75 socket.
Can anyone confirm the actual nut size.
Hi Adrian,
I said the same thing, half mm difference.
But I am changing my theory, you cant strip a 19mm nut with a .75 socket. So it must be that the tire guys are using a 19mm on a .75 socket. ???????????????????????????????????
Can anyone confirm the actual nut size.
Didn't understand this part. so I ???????????????????? it.
The Jag nuts are 19mm which are smaller then the 3/4" socket. The .05 difference is not a problem if you hand tighten the nuts. The problem comes in with the rotational snap of the air wrench. Also if you have a worn 3/4" socket that adds more to the problem.
The $20 nuts arrived today, but I won't be able to try them until next weekend. (If I don't like 'em, I'll put them on my Lexus, as it has the goofy two piece design as well.)
Thank god I read your post, it answered multiple questions for me. If Lexus uses them, there must be a real good reason for the 2-piece design. They are fanatics for superior over-designed hardware. My landcruzer has 24mm drain plugs in 4 places, you cant shear them and the magnet size can be larger.
I read this on the web after seeing your post.
"The clamping surface area of a washered lug nut is about double the area from a traditional chamfered / beveled nut. To put it into perspective, five 14mm washered lugs have more clamping surface area and strength than six 12mm chamfered / beveled nuts. This is assuming same lug to center spacing. Washered lug nuts make the attachment stronger in the corners, but not really any stronger under acceleration or braking."
There was also some talk about soft aluminum/alloy wheels requiring something to spread the force.
Last edited by Queen and Country; 03-07-2016 at 04:22 PM.
Didn't understand this part. so I ???????????????????? it.
The Jag nuts are 19mm which are smaller then the 3/4" socket. The .05 difference is not a problem if you hand tighten the nuts. The problem comes in with the rotational snap of the air wrench. Also if you have a worn 3/4" socket that adds more to the problem.
Sorry I got turned around. Yes 3/4 is larger than 19mm. Mea culpa.
Thank god I read your post, it answered multiple questions for me. If Lexus uses them, there must be a real good reason for the 2-piece design. They are fanatics for superior over-designed hardware. My landcruzer has 24mm drain plugs in 4 places, you cant shear them and the magnet size can be larger.
I read this on the web after seeing your post.
"The clamping surface area of a washered lug nut is about double the area from a traditional chamfered / beveled nut. To put it into perspective, five 14mm washered lugs have more clamping surface area and strength than six 12mm chamfered / beveled nuts. This is assuming same lug to center spacing. Washered lug nuts make the attachment stronger in the corners, but not really any stronger under acceleration or braking."
There was also some talk about soft aluminum/alloy wheels requiring something to spread the force.
There might be a misunderstanding here. When I said 'goofy two piece design', I meant the 'thin metal wrap' over the nut, the washer was a given, so maybe I should have said 'goofy three piece design'. I can't see any 'over design' using that wrapper, it's cosmetic and subject to fail.
So just to be clear, these $20 nuts have no wrapper, unlike the Jag and Lexus OEM nuts that do.
There might be a misunderstanding here. When I said 'goofy two piece design', I meant the 'thin metal wrap' over the nut, the washer was a given, so maybe I should have said 'goofy three piece design'. I can't see any 'over design' using that wrapper, it's cosmetic and subject to fail.
So just to be clear, these $20 nuts have no wrapper, unlike the Jag and Lexus OEM nuts that do.
No problem for me as I assumed that's what you meant. I gotta believe the reason for the wrapped nuts must be cost and method of manufacturing. Somehow it must be cheaper and faster to build them in this method. I can understand the washer design and can see their better application for cornering loads . I would be interested to see the cost difference between the solid vs wrapped.
kj07xk, jagtoes,
Regarding cosmetic cover. My deduction is that they are using ultra hardened steel for the nuts. Which is both ugly and not easily plated for automotive use. I can say for a fact that the wrapped is more expensive.
BTW, even at wholesale you cannot buy hardened fastener like a lug nut with a captive washer for $1. Furthermore I saw on the mickey mouse Gorilla lug nuts website that their best fastener is stainless steel- ss is a fraction of the strength of a hardened steel. And huge heads up, SS nut will cause galling- welding!
Yes, they appear to be, as I can see my reflection in them.
So they do look different than the OEM nuts, which are non-reflective.
I didn't get around to putting them on the car yet, but now that I have another set of wheels to be installed (maybe this coming weekend?), I'll give 'em a try and see if I like the look.
03-04-2016, 08:01 PM
on eBay for $18.04 delivered: Replacement for Jack 2004 2010 Toyota Sienna Spare Tire Lug Wrench New | eBay 21mm socket fits the Toyota lug nuts in my post #10, above.
