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2007 Tahoe 20" Wheels

24 messages,  Last post on Jul 26, 2009 at 5:24 PM

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#12 of 24 Re: 2007 Tahoe/ 20"Wheels [73shark] by awf_axis Oct 28, 2006 (7:10 am)
Replying to: 73shark (Oct 26, 2006 12:34 pm) Having upgraded wheels on all my SUV's over the years, the simplest thing to do is match the diamater of your existing factory wheels. Simpy go to a website that has tire diameter calculator, and use the calcular to size up different tire specs. (to go .25-.5" bigger diameter is no sin, since you actually go a tiny bit farther than the odometer shows).   The alternative of reprogramming the tire diameter into the vehicles computer requires a programmer, like Hypertech. Not a cheap solution, so its easier to match sizes.   Regarding the maximum wheel sizes, the dealer saying that 17' are the max is wrong. I had 20's on my '01 and '05 Yukons. Any aftermarket wheel with 15 to 25mm positive off-set works fine. Width would be 8.5 to 10". The rubber would be best at 285x55x20 (for 8.5-9" wheels) to 305x50x20 for 9.5-10" wheels).   Hint: The larger off-set of 20+ would be recommended for the 305 tires, to avoid an hard turn rub.   The 285x55x20 is the factory tire size (optional 20's) for the pre-07 Denali's and Escalades.   The problem with the '07 factory wheels (20's and 22's) is that the off-set is 31mm, which is a little TOO much for '01-06' SUV's.   Finally, the weight is a concern. The '01-06' brakes are certainaly better than the previous generation, but excessive weight has 2 effects.   1. The braking distance is increased due to weight.   2. The ride gets harsher and bouncier because of the extra weight being pushed on the springs and shocks.   If you have the bucks, look for forged wheels, rather than cast. They are very light-weight, stronger than cast, but expensive.   I bought 20" EVO Weld Wheels back in 2001, and the tire/wheel combo was lighter than stock. I got these after previously purchasing a cheaper set, that nearing knocked my teeth out, and made the steering a bit squirrely (seeking ruts in the road). Perhaps look for wheels that have less mass, like spoke styels. Check out the EVO AXIS-6 wheels. They are being discontinued, but the spoke style is illustrated well.   Dave
#13 of 24 Re: 2007 20" wheels on a 2003 Tahoe? [jmalik] by dantheman3 Dec 11, 2006 (12:05 pm)
Replying to: jmalik (Oct 20, 2006 6:16 pm) I beg to differ with your "expert". I have 18" on my 03 Tahoe with no lift. They look and ride excellent.
#14 of 24 rims by ockevin Jan 30, 2007 (12:18 am)
I ran 24" rims on my 2001 tahoe with no problems I ran 285/40/24 Pirelli tires with no rub.....Your dealer is full of it. I would not deal with them , as their ignorance will hurt you in the long run.
#15 of 24 Anyone with 22's? by diesel70 Feb 13, 2007 (10:34 am)
We just purchased a 2007 Tahoe, my question is what is the best size tire to put on the 22's I have. The Tahoe is stock height with no plans to rasie or lower (maybe the rear) to level it out. I don't want to hack or cut any part of the wheel well. I've had a few different people tell me different sizes and I'm leaning towards 305/40 r22's but I was wondering if 45's would work. The rim is the Martin Bros Slickstar's. Any other recomendations are appreciated, I just want the best ride with no rubbing. Thanks in Advance. Replies to this message: valvestud (Feb 13, 2007 1:03 pm) beach15 (Feb 14, 2007 5:57 am) diesel70 (Feb 14, 2007 10:17 am)
#16 of 24 Re: Anyone with 22's? [diesel70] by valvestud Feb 13, 2007 (1:03 pm)
Replying to: diesel70 (Feb 13, 2007 10:34 am) Take a look at the Cadillac website. They have a 22" option and I assume it would indicate tire size.
#17 of 24 Re: Anyone with 22's? [diesel70] by beach15 Feb 14, 2007 (5:57 am)
Replying to: diesel70 (Feb 13, 2007 10:34 am) Looks like TireRack recommends a 285/45/22 to maintain the stock overall diameter (and therefore keep the speedo and all in check). They tend to air on the conservative side, at least as far as tire width, so you likely could do a 295 or 305 in conjunction with a shorter sidewall.   Here's a good comparo for sizing: http://www.1010tires.com/TireSizeCalculator.asp   From past experience with Avalanche's, 305's MIGHT rub a tad in full turn and/or compression, but I'm not completely sure. Should be fine, but you might also get more substantial data from either a wheel/tire shop or other online boards. Replies to this message: diesel70 (Feb 14, 2007 10:17 am)
#18 of 24 Re: Anyone with 22's? [beach15] by diesel70 Feb 14, 2007 (10:17 am)
Replying to: beach15 (Feb 14, 2007 5:57 am) Thanks for replies but I'm going with 285/ 45's the more rubber between the rim and road makes for a better ride. Thanks again for the info.
#19 of 24 Replacing 17's with 20's by toecutter May 22, 2007 (2:17 pm)
well I just got a set of 20s for my tahoe from flea bay. 1,650 shipped.   The dealer told me I would need the trans Recalibrated,     and the sensors re learned. well I did the sensors myself, no big deal.   but I was also made aware by the guy I bought the set from that, the 17's and 20's measure the same when on the vehicle, about 31" from top to bottom.     so I don't need no stinking trans recali.     the wheel is larger but the tire shorter which in turn, ends up being the same height as the 17s that was on there.   the dealer wanted an extra 220 for this recalibration job   crooks!!!   just to be on the safe side, I tested the deal against the mile markers on a nearby Road and all's cool plus the tahoe looks awesome with the brushed 20's on   Replies to this message: harrybackman (Sep 04, 2007 8:09 pm) 73shark (Sep 13, 2007 6:50 pm)
#20 of 24 Re: Replacing 17's with 20's [toecutter] by harrybackman Sep 04, 2007 (8:09 pm)
Replying to: toecutter (May 22, 2007 2:17 pm) You guys are killing me, do any of you know the difference between width and diameter?   first number is width in mm, to convert to inches, divide by 25.4.   second number is sidewall ratio (to the width) ie 55 = 55% of the width   third number is wheel diameter.   so to calc tire size for - say a 305/50/20 you would say   305mm / 25.4 = 12" wide x .50 x 2 (two sides to a tire) plus 20 (wheel diameter) = 32" diameter tires   now you can run 15" wheels with 35" tires if you have a high sidewall ratio (lots of rubber vs lots of wheel), see the difference?   my 07 silverado crew cab just got a 2" leveling kit, i tried 305/55/20's and they rubbed when i turned, so i cant go quite that big, either have to go down to 285 wide, or to 50 sidewall.   any questions?
#21 of 24 Re: Replacing 17's with 20's [toecutter] by 73shark Sep 13, 2007 (6:50 pm)
Replying to: toecutter (May 22, 2007 2:17 pm) I believe the recalibrating for 20s will also update the ABS algorithm for the increase in rotating mass. Believe me those 20s are heavy. Just rotated mine and thought I was going to need a forklift.

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