Equivalent Tire Sizes? - Toyota Nation Forum : Toyota Car and Truck Forums

bincent · 10-29-2011, 03:01 PM

I purchased a set of stock 17" rims for my 2011 Sienna XLE. I know that the standard size tire to be used is 235/60/17 but what other sizes can fit on this rim?

One tire shop said that the correct alternate size was 215/65/17 and I just wanted to double check whether that was correct or not. I thought that a rim that can fit a 235 width should only be able to fit 235 and not anything lower.

I was thinking that I could go 235/55/17 or 235/65/17. I'm looking to throw some snow tires on these rims.

Sienna Dude · 10-29-2011, 07:10 PM

I just bought some 17" steel rims for winter tires and put 225/60R17 tires on them. A slightly thinner tire is better for winter driving as it will cut through the snoe better than a wider tire.

You can check tire size compatibility using a tire size calculator that you can find on the internet using Google. The 225 vs the 235 is less than a 2% difference - most odometers are off by that much.

Electrical_Tech · 11-03-2011, 04:29 PM

^^ +1 on the tire size calculator.

I have a slightly different question though (sorry for the threadjack)

We have a 2012 SE, which has the 19" rims on. We want to get just a simple set of 17" steel wheels with winter tires premounted. Are the hubs and clearances the same for all the sienna line up? I know they all carry the 235/XX/RXX dependant on model trim: ie. 235/60/R17 for the CE/LE, 55/R18 for the XLE and 50/R19 for the SE.

Thanks in advance

skinny2 · 11-03-2011, 10:14 PM

Looks like the brakes/discs/pads are all the same regardless of FWD model. Might be a slight difference between AWD and FWD but that's not an issue for you.

Electrical_Tech · 11-04-2011, 10:09 AM

Hey Thanks for the information. I had thought as much as the only differences trim to trim is the rim size really. As for the rim, is a standard replacement steel rim with the correct size, bolt pattern and hub will do or does it have to have any special considerations? I know the TPMS isn't going to be functional with the A/M rims, but are there any other considerations?

Thanks again

bowlth · 11-04-2011, 10:14 AM

I've found this one pretty useful.
http://www.1010tires.com/tiresizecalculator.asp

Electrical_Tech · 11-04-2011, 10:34 AM

+1, was using 1010 yesterday.

blizprl1 · 11-22-2011, 01:38 PM

Quote:

Originally Posted by Electrical_Tech

^^ +1 on the tire size calculator.

I have a slightly different question though (sorry for the threadjack)

We have a 2012 SE, which has the 19" rims on. We want to get just a simple set of 17" steel wheels with winter tires premounted. Are the hubs and clearances the same for all the sienna line up? I know they all carry the 235/XX/RXX dependant on model trim: ie. 235/60/R17 for the CE/LE, 55/R18 for the XLE and 50/R19 for the SE.

Thanks in advance

FWD XLE uses 235/60/17 tire size with different wheel style compared to FWD LE. 235/55/18 is used by FWD & AWD Limited, AWD XLE. Not sure for AWD LE.

All other parameters are same. Try www.tirerack.com. Use its +1, +2, -1 wheel and tire mods to check what other wheels and tires you can get.

Electrical_Tech · 11-23-2011, 01:19 PM

We ended up going with 225/65/17s on ours simply for availability and price. Noisy as heck, but hopefully they will make winter driving better.

Ryder99 · 11-23-2011, 03:56 PM

The 225/65/17 tire is the stock size on the 07-11 Honda CRV's and seems to have a larger selection compared to the stock 235/60/17 that comes on the Sienna.

Scott O'Kashan · 11-23-2011, 04:02 PM

Using a narrower tire will reduce the handling capability of the vehicle, especially in emergency situations, i.e. when a deer jumps out in the road and the driver has to take evasive action.

Scott O'Kashan · 11-23-2011, 05:09 PM

Quote:

Originally Posted by bincent

I purchased a set of stock 17" rims for my 2011 Sienna XLE. I know that the standard size tire to be used is 235/60/17 but what other sizes can fit on this rim?

One tire shop said that the correct alternate size was 215/65/17 and I just wanted to double check whether that was correct or not. I thought that a rim that can fit a 235 width should only be able to fit 235 and not anything lower.

I was thinking that I could go 235/55/17 or 235/65/17. I'm looking to throw some snow tires on these rims.

Whenever we try to switch tire sizes, first and foremost to be safe we need to maintain the original load carrying capacity of the original size tires. The original tires for your Sienna have a Load Index of 100, a load carrying capacity of 1,764 lbs. per tire and are T speed rated.

A 235/55R-17 has a only a load carrying capacity of 1,709 lbs. per tire, which is 55 lbs. less per tire X 4 = a 220 lbs. loss of load carrying capacity, which is substantially less then the O.E. tire size. Not good.

The 235/60R-17 O.E. size has a revolutions per mile of 740 and the 235/65R-17 has a revolutions per mile of 716 and this difference will make your speedometer read incorrectly.

The 225/65R-17 has a Load Index of 102, which is better than the O.E. size. Check.

The load carrying capacity of this size is 1,874 lbs. per tire, better than the O.E. size. Check.

The revolutions per mile of this size is 731, which is very close to the O.E. size. Check.

The O.E. size has an overall diameter of 28.1"

The 225/65R-17 size has an overall diameter of 28.5". Very close to the O.E. size. Check.

This makes the 225/65R-17 the correct narrower size than the stock P235//60R-17.

However, having said this, reducing the width of the tire can reduce the handling capability of the vehicle, especially in situations where emergency evasive action has to be taken, i.e. when a deer jumps out into the road. With the 10 mm slightly narrower tire for slightly improved snow traction, but trading off handling capability, (a safety issue), I personally don't think that's worth it.

I'd recommend you stay with the stock O.E. size of P235/60R-17, especially since there are very good winter tires available in this size. For a good selection of choices, try TireRack.com

Whatever winter tires you select, be sure to use a full set of four, (instead of only two on the front), so the rear of your Sienna doesn't slide around in the snow while the front is holding the road with the high traction winter tires. A situation like this can cause the rear of the car to lose traction, start sliding, putting the vehicle into a spin and crash.

I hope this has been of help.

-- B.F.Goodrich T/A Certified Tire Specialist

Electrical_Tech · 11-24-2011, 11:15 AM

I have found that the van handles far differently with the 225/65's on over the 235/50's but that was expected. Knowing this, and driving proactively I think the marginal risk is acceptable.