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SUVs Chevrolet Suburban & Tahoe 2007 and newer Chevrolet Tahoe and GMC Yukon
3125 messages, Last post on Nov 27, 2009 at 6:32 PM
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Replying to: stormin800 (Jun 06, 2006 5:43 am) As long as the tire circumference is the same, then you would not have to recalibrate the speedometer. 20" wheels will be signifcantly heavier and the tires will have a much shorter and stiffer sidewall. The combination of added unsprung weight and stiffer tire will significantly worsen the ride. In addition, the much shorter sidewall means the wheels and tires will be much more vulnerable to damage from potholes. So you'll pay a fortune for new tires and wheels and be much more likely to have to pay more in the future to repair/replace them. The added weight of the wheels and tires further from the hub increases their rotational inertia. Consequently, the 20" wheels will somewhat reduce acceleration and increase braking distances. In other words, the only positive from 20" wheels is looks (if you like that look). There are many, many negatives. I suggest that you stick with 17"s.
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Replying to: nedzel (Jun 08, 2006 8:27 am) The 2007 line-up's suspension is designed to handle the 20" wheels, with the 275x55x20 tire. (The diameter is the same, around 26"). The factory suspension is tuned for 17" and 20" wheels, since differentiation would add cost to the production line. The new SUV platform uses a strut front suspension, which provides better control of the additional unsprung weight that comes with larger wheels. The older torsion spring did not allow the suspension to act "fast" enough to dampen the extra weight of heavy wheels. On the subject of weight however, there are aftermarket wheels which are as light as the smaller wheels. Weld EVO provides a small line-up of 20" forged wheels, that are much stronger than factory, and lighter. Provided you DON'T go with a 305 wide tire, you will not feel that much difference. The wider 305 tire will require a wider wheel (like a 20x9.5, meaning more weight). The wider road contact will cause the road surface to translate to the vehicle, meaning rougher ride, and a tendency to follow ruts. The reasonable setup (for an '07) would be a 20x8.5 wheel, with 275x55x20 tires, using at least a 18mm to 31mm positive offset. Dave |
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Replying to: tuscotodd (Jun 08, 2006 7:35 am) 
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Replying to: junglegeorge (Jun 08, 2006 7:02 am) I purchased Catchall mats from USSpeedOnline.com. I got them for the front and second row. The second row mat is particularly great because it is in one piece and goes across the entire area. My son seems to always get the middle dirty, where the regular mats don't cover and this prevents the carpet from getting any soil. They are carpeted, but can be scrubbed and hosed off. They have a rubber backing that doesn't allow anything to soak through and also a small lip around the entire mat. They are custom fit and let me say, they fit EXACTLY. I got the beige and it's identical to my cashmere carpet color. Also, they come with anchor attachments, but I don't use them. I didn't want to screw them through my carpeting. They stay in place just fine without any anchoring. USSpeedOnline was also the cheapest place to get them and I shopped around. There's no shipping charge and there was no tax (I'm in CA, so I don't know with other states.) I highly recommend these mats. I'm still trying to decide on the cargo liner. I want a liner that is rubber (I have two labs) and will fit when I have the third row seats tumbled forward or down. Any suggestions from anyone would be great. |
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Replying to: junglegeorge (Jun 08, 2006 7:02 am) |
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Replying to: 73shark (Jun 08, 2006 6:47 pm) There is a GM rubber mat for the rear area that is available though, that is cut out to go around all of the seat tracks. I didn't price that - but it looked like a nice piece. The only issue I had with that is that it left the seat pockets open - but from the sounds of it, that may be exactly what you are looking for.  Hope that helps! TuscoTodd
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Replying to: tuscotodd (Jun 10, 2006 5:30 am)
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| Does anyone know what are the biggest size rims that can fit in my tahoe?. | |
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Replying to: tourguide (Sep 01, 2005 3:01 pm) for putting this ... about the whole approach to fuel effeciency. GM had (perhaps still has) an opportunity to provide far and away class leading fuel effeciency and instead they decide to provide more power through a larger V8. AS IF the 5.3 of today WASN'T large enough! At last report the new and improved Tahoe/Yukon is slated to receive a 6.0 liter motor! So GM has decided to take the effeciency gains from their new Displacement On Demand technology and drop in more power - because we just didn't have enough before! Yes, this was the wisdom that came out of GM headquarters in this - the time of $3.50 (and climbing) a gallon regular unleaded. Let me put this another way. Instead of going for the gold - in fuel effeciency - GM settles for a pitiful 2.1 mpg improvement in fuel economy. This assumes the optomistic prediction that Edmunds quotes of a full 15% effeciency gain and 14 mpg city driving. No wonder GM and the other domestic auto makers are in such trouble. Anybody else still wonder why Toyota is posting such huge sales increases? I'm afraid you need to do your homework. GM leads the class in standard hp yes, but they also lead the class in fuel efficiency. That's right, the gmt900 SUV's achieve better mpg than Ford, Dodge, Nissan, or your beloved Toyota. You sit here and criticize the fact that GM isn't doing enough to increase the fuel efficiency of their large trucks and Suv's, and you say that Toyota is better, and no wonder they are doing better?! First of all, GM far outsells Toyota in large SUV and truck sales,secndly, Toyota offers a much smaller engine that gets worse mpg, and third, lets not forget that Toyota is now going t o offer a 5.7 L engine in their redesigned Tundra and presumably the Sequoia when it's redesigned, and they have made no attempt to offer such fuel saving technology as DOD. Add to that the fact that GM will have hybrid versions of these vehicles in a matter of months, and these engines can be run on ethanol( a clean burning, cheaper, American made fuel), and it's very clear that GM's large SUV's and trucks are superior in fuel efficiency and power to Toyota's large SUV's and trucks. |
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Replying to: 73shark (Jun 10, 2006 9:22 am) |
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