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10-24-2007, 02:23 PM
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| 5 lug hubs? Anyone know why Toyota went back to 5-lug hubs on the 2007 Tundra? My '07 Reg. Cab 5.7L 4X4 (long bed) has 5-lug hubs...the 2000 Tundra SR5 Ext Cab 4.7L 4X4 I traded in for it had 6-lug hubs...so did the '97 T-100 SR5 Ext. Cab 4X4 I traded in for that.....you would think a truck rated to tow 10,300 Lbs. would have more lugs...anyone have any ideas? 2007 Reg. Cab 5.7L DX long bed 4X4 slate grey metallic cold kit towing pkg/towing mirrors OEM bedliner and mud flaps weathertech rain visors and bug deflector shield  |
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10-24-2007, 02:29 PM
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| Toyota is usually pretty thorough in this regard, my guess is they tested both and didn't see a strength benefit, or saw a cost benefit without a loss in strength. More lugs means more holding strength right? but more lugs means less metal between the lugs.. so which one is better?
__________________ CrewMAX 5.7 SR5 Surrey, BC Canada LINE-X Bed Liner, Tekonsha Prodigy Brake Controller, ScanGauge II Geddes Family Homestay - Hosting international students in Vancouver, Surrey |
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10-24-2007, 03:52 PM
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| Great answer! Are the axels built by Toyota or farmed out?
__________________ Please Click for Sarah's Wish |
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10-24-2007, 05:19 PM
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| I forget the exact #'s, but the new Tundras studs are something like 16-18% larger in diameter than the older Tundra's 6 studs. This means, at least in theory that the new Tundra's studs are actually a little stronger than the old Tundra's 6 lugs system.
__________________ 2007 Tundra DC Limited 5.7L 4X4 TRD,NAV,TOW Xlerator Exhaust aFe Stage 2 CAI Desert Sand Mica |
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10-24-2007, 06:41 PM
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| they went to the parts bin for the most heavy duty overbuilt design availble: the Landcruiser hubs are the same way large 150 mm bolt circle (which reduces the load on the studs thus less required). By the way if you have trouble finding 18" aluminum wheels search for a 2006 Landcruiser fitment. Any wheel that fits the 150 mm Landcruiser will fit the Tundra and you will have about a dozen manufactures making them instead of just one for the Tundra |
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10-24-2007, 10:52 PM
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__________________  07 Tundra DC 4x4, Radiant Red, debadged, Bed Mat, Brushed stainless steel step boards, Auto Dimming Rear View Mirror, Heated Towing Mirrors, 18” Alloy Wheels, Cold Kit, Mud Flaps, Tow Package, Rear Sliding Window, All Weather Floor Mats, TomTom 920T |
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12-27-2007, 07:55 AM
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| The studs are 9/16th diameter, which is fairly stout and the distance between studs is 5.9".....or 150mm. The old five quarter ton military jeeps only had 5 lugs. The rearends are made by Hino, a medium duty truck manufacturer. Other than the fact that they are a semi-floating design they have a differential and axle strength similar to the Dana 70 and GM 14 bolt. |
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