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Mazda CX-9 Tires and Wheels

74 messages,  Last post on Dec 09, 2009 at 12:46 AM

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What is this discussion about? Mazda CX-9, Mazda, SUV


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#11 of 74
Re: 20" vs 18" wheels....... [99zoomr] by morley1
Sep 28, 2007 (10:34 am)
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Replying to: 99zoomr (Sep 28, 2007 10:21 am)

Great. Picking our us up in AM!
#12 of 74
Re: 20" vs 18" wheels....... [kbedwards] by imamg
Sep 28, 2007 (10:47 am)
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Replying to: kbedwards (Sep 27, 2007 8:18 pm)

The proof is always in the pudding... info is here to help ... not to make the decision for you... We've had our GT for a few months now...and have zero complaints about the ride... th 20's give it such a nicer stance visualy too... it's Cx-Y
#13 of 74
Re: 20" vs 18" wheels....... [tgdaman] by cowboypinky
Oct 31, 2007 (12:31 pm)
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Replying to: tgdaman (May 10, 2007 3:23 pm)

I've got the 07 Touring (12,000mi) with 18's and believe the road noise is in the tires themselves. I have had Dualer tires before and even though the tread doesn't look all that agressive, it sure sounds that way. I can't wait until I wear these out.
Love the heck out of the car though. I agree with another post, went with the Touring b/c the wife and I didn't like all the chrome.
#14 of 74
Swap 18" rims on a GT - Driving in snow.. by mikeha77
Nov 20, 2007 (5:22 pm)
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I'm looking at getting a CX-9 GT, but want to put the 18:" rims on it. One dealer I'm talking to says they've done it - no problem. The other dealer says it will throw off the ABS calibration, odometer, void the warranty, etc. Has anyone had the dealer put 18" rims on the GT?
 
Second, for any tire experts out there in snow country - would you expect any difference in snow/ice traction between the 245/60R18 H speed rated on the Touring vs the 245/50R20 V-Speed rated on the GT?
 
Thanks
#15 of 74
Re: Swap 18" rims on a GT - Driving in snow.. [mikeha77] by morley1
Nov 21, 2007 (4:53 am)
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Replying to: mikeha77 (Nov 20, 2007 5:22 pm)

I bought the CX9 GT and kept the default 20 in wheels. We are in snow country but haven't had snow yet. Our dealer was willing to swap the wheels/tires for us and told us it would not cause any of those issues. He specifically refuted the idea that it would throw off the odometer and checked into it himslef. Sounds like your dealer does not want to accommodate you. Having said that we test drove 18 and 20 in wheels (on non GT and GT) and preferred the larger wheels. I have looked into snow tires for the 20 in wheels and the only ones I can find in that size tire are Blizzaks at $250 per tire (w/o install). Waiting for the first snow to see how it handles.....
#16 of 74
Re: Swap 18" rims on a GT - Driving in snow.. [morley1] by mikeha77
Nov 21, 2007 (8:13 am)
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Replying to: morley1 (Nov 21, 2007 4:53 am)

Thanks for the info. That was my feeling too - that the dealer just didn't want to do it. I did the research and the tread width and diameter of the tires are essentially identical.
 
Question on the Blizzaks. Do you know how those wear vs normal dry weather tires? Are they a tire you can drive on all year, or do they need to be pulled off in the warmer months?
#17 of 74
Re: Swap 18" rims on a GT - Driving in snow.. [mikeha77] by nxs138
Nov 21, 2007 (9:23 am)
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Replying to: mikeha77 (Nov 21, 2007 8:13 am)

I fail to see how the 20" rim will be more problematic than an 18" rim in the snow. In the case where you would have the exact same brand tire on each rim, why would the 20" rim handle worse in the snow? Tire widths are about the same, tread pattern would be the same...I just don't see the issue here.
 
I know some people switch out their nice summer rims for cheapo ones in the winter, but that's usually because they are downsizing in rim size so that their winter tires will be cheaper.
 
It would be interesting to read the Acadia forums: the Acadia comes in optional 19" rims, so when winter hits it might be a nice benchmark to see if these folks have issues (the reason I mention the Acadia is because their forums are much more active than the CX-9 forums, so there should be more real-life data there).
#18 of 74
Re: Swap 18" rims on a GT - Driving in snow.. [nxs138] by mikeha77
Nov 21, 2007 (9:56 am)
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Replying to: nxs138 (Nov 21, 2007 9:23 am)

Thanks for the reply. It isn't so much the rim diameter as the speed rating of the tire. the 20" has a V-rated tire and the 18" has a H-rated tire. I'd heard that the slower the rating the better in the snow/ice.
 
I also had fears of going into the tire store when the 20" tires need replacing. Best estimates I could get is that the 20" tire would run between $75 and $100 more per tire to replace than the 18"! Ouch.
#19 of 74
Re: Swap 18" rims on a GT - Driving in snow.. [mikeha77] by nxs138
Nov 21, 2007 (10:53 am)
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Replying to: mikeha77 (Nov 21, 2007 9:56 am)

Got ya!
 
I think you're right about the tires, on average the 20" will cost more, and you will have less choices than the 18". I am also looking at the GT, and had looked around since I had the same concern. Sam's Club does have a couple brands at about $100 per tire, that's the best that I saw (but you have to order online). I'm sure Costco would have similar deals.
 
As for winter tires and speed rating: Consumer Reports tested V and H-rated winter and all-season tires, and the bottom line is that there are no correlations between a higher speed rating and lower performance (i.e. the V and H-rated tires get the same performance ratings). What I did find is that there seem to be more choice of H-rated tires.
 
I think you might be thinking of a pure performance summer tire with high speed rating, whose rubber compound hardens in the winter and thus does not provide optimal traction. But here you're looking at two all-season tires, so differences are minimal.
#20 of 74
Chains for 20" wheels by expat69
Dec 21, 2007 (2:07 am)
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We're due to pick up our AWD GT in February, and because of the requirement to have chains to travel in some areas (the Alps) in the winter, I'm looking for a source that won't cost me an arm and a leg. Has anyone had any luck obtaining some?
 
The chains I bought for my Honda CRV were over $100, an my friend just bought some for his 18" tires for about $350, so I'm just a wee bit concerned.

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