| BlackMagic05 |
I just bought a 2005 Murano a few days ago, and it was outfitted with a very strange tire size: 235/55-18 Michelin MXV4s. The tires don't have much life left in them and I have to replace them to pass my state inspection anyway, but I'm wondering what the negatives are to installing tires that are so much smaller (6% in this case). Obviously, the speedometer/odometer are going to read high, but are there other negatives (brake wear, for example) I should be aware of?
I actually think the lower profile looks pretty cool (probably why the previous owner installed them), and the ride is just fine, but I'm probably going to have a set of 235/65-18 Yokohama AVID H4S installed this week. |
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| njjoe |
BM05-
Running those smaller tires means the speed and distance is overstated by 6%, which means your warranty will reach the mileage limit 6% faster.
-njjoe |
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| BlackMagic05 |
| Thanks, joe. I understand the implications in terms of increased wheel revolutions, but I'm mostly interested in any mechanical harm that the car could have suffered from having those tires on them for 30,000+ miles. I'm going back to the stock size tires, but I want to have everything properly checked out. |
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| njjoe |
BM05-
I doubt very much that the smaller tires contributed to any additional wear and tear on the driveline.
For a given vehicle speed, the driveline would be under 6% less load, but would be rotating 6% faster, which yields the same amount of work.
The brakes would be using more surface area per foot of stopping distance, but the stopping load remains the same.
I wouldn't worry from a wear-n-tear standpoint. However, aesthetically, I'd lose those "little" tires.
Do you have AWD? If so, don't even think of using the 235/65 spare tire if the 55's are still on the MO. It could confuse the AWD controller into engaging the system on dry pavement which is detrimental to the x-fer case.
-njjoe |
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| BlackMagic05 |
| Yes, I have AWD. Good to know that there's not likely to be any damage done. I actually kind of like the look of the lower-profile tires (makes the vehicle look more car-like, less truck-like, IMO), but the wife thinks there's way too much empty space in those big wheel wells, and she winds. A new set of 235/65-18 Yoko AVIDs are going on tomorrow. |
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| Eric L. |
| Actually I think only Canadian MO's have full size spares. In the US, it is a space saver compact spare. |
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| DMordarski |
| 265-60-r18 is the best 18 for a murano |
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| njjoe |
quote:
Originally posted by Eric L.
Actually I think only Canadian MO's have full size spares. In the US, it is a space saver compact spare.
E-
It does not matter what type of spare is in the trunk, they both have the same diameter as the stock tires.
Putting a full-diameter spare on BlackMagic05's MO could cause the AWD controller to engage on dry surface, which could result in driveline damage.
-njjoe |
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