Anyone with 17" wheels with +45 offset and 245/55/17 tires? [Archive] - Honda Element Owners Club Forum

: Anyone with 17" wheels with +45 offset and 245/55/17 tires?


WorldSailor
05-17-2005, 01:09 AM
I'm just about to pull the trigger on a set of 17x7.5 TRMotorsport R5's w/Bright Silver Paint and a set of 245/55WR17 Pirelli PZero Rosso Asimmetrico's - both from TireRack.com. I ran the numbers for the tires and they are 1.18" wider, .24" smaller in diameter (-.9%). The wheel offset is identical to the alloy EX wheel at 45 mm and are 1" wider. I measured the distance from the stock tire to the front strut and got about 1 1/8". The offset calculator at http://www.1010tires.com/WheelOffsetCalculator.asp tells me that this wheel should extend 13mm both in and out (about 1/2" each way).

The wheels weigh slightly less than the stock alloys, but probably will not make up for the heavier tires. I'm not sure exactly what the new tires weigh, but they're probably more than 8 oz. more than those lamo Wranglers.

Since the diameter is about the same and there seems to be room between the strut and the tire, I figure everything should fit without rubbing. But since it costs an arm and a leg to ship stuff to Honolulu, I'm asking for a second (third, fourth?) opinion. Or if I'm smoking too much pakalolo, just say so. ;-)

Oh yeah, why am I doing this? For better handling (cornering, stopping, side wind resistance) both wet and dry and reduced tire noise. I also have a set of those Nopi Sway bars on the way to add to the solution.

Any advice/input/nay-saying or words of praise would be greatly appreciated.

WorldSailor

seanneal
05-17-2005, 06:37 AM
I think you MAY get some rubbing on the strut at the inner edge of the tire. I run 235/60r17s on Acura 17x8" with a +35mm offset. The greater offset (+45mm) may put your wider (245 series) tires too close to the strut. I can barely fit my index finger between the tire and the strut on mine (about 10mm clearance). Here's a couple of pics of my setup:

http://memimage.cardomain.net/member_images/10/web/502000-502999/502731_40_full.jpg

http://memimage.cardomain.net/member_images/10/web/502000-502999/502731_37_full.jpg

Snarf77
05-17-2005, 06:42 AM
Go for it. They'll fit just fine. I have 245/55/18s on my element on 18x8s with a 45 offset. They are close but they DO NOT RUB! I'm pretty sure a 17 inch rim would allow for even more clearance.

WorldSailor
05-17-2005, 02:42 PM
Thanks Snarf77 and seanneal,

The offset calculator returns a -19mm offset for Snarf77's wheels and a -9mm offset for seanneal's wheels. That means that seanneal's wheels are 10mm closer to the strut than Snarf77's. My proposed -13mm selection along with the same tire width as Snarf77's leads me to believe that my selection should work for the strut clearance - right in the middle.

On the other (outer) side, Snarf77's wheels protrude an additional 19mm while seanneal's add 29mm. So, that then begs the question, do either of you guys have fender clearance issues? Snarf77's tires are a little over 3/4" taller than stock while seanneal's are only a little over 1/4" taller.

Neither of you guys complains of rubbing so maybe I can use my preferred combination of 18 X 7.5 @ 42mm offset with 245/50/18 tires. I prefer them 'cause there are significantly more tire selections in this size than 245/55/17 (8 v. 1).

I've summarized all this in the following table:

Combo Wheel-D Wheel-W Wheel-O Tire-W Tire-A Tire-D Strut-C Fndr-C
------- ------- ------- ------- ------- ------- ------- ------- -------
Stock 16 6.5 45 215 70 27.85 - -
1st sel 17 7.5 45 245 55 27.61 -13 +13
Seanneal 17 8 35 235 60 28.10 -9 +29
Snarf77 18 8 45 245 55 28.61 -19 +19
2nd sel 18 7.5 42 245 50 27.65 -10 +16

Since my second choice has inner clearance (Strut-C) that is slightly worse than seanneal's but significantly better than Snarf77's, AND since the outer clearance (Fndr-C) is better than either of your's, AND since the tire choice is smaller in diameter than either, I conclude that everything should fit.

So, once again, does this make any kind of sense?

Worldsailor

Snarf77
05-17-2005, 03:39 PM
Thanks Snarf77 and seanneal,


I've summarized all this in the following table:

Combo Wheel-D Wheel-W Wheel-O Tire-W Tire-A Tire-D Strut-C Fndr-C
------- ------- ------- ------- ------- ------- ------- ------- -------
Stock 16 6.5 45 215 70 27.85 - -
1st sel 17 7.5 45 245 55 27.61 -13 +13
Seanneal 17 8 35 235 60 28.10 -19 +29
Snarf77 18 8 45 245 55 28.61 -9 +19
2nd sel 18 7.5 42 245 50 27.65 -10 +16

Since my second choice has inner clearance (Strut-C) that is slightly worse than Snarf77's but significantly better than seanneal's, AND since the outer clearance (Fndr-C) is better than either of your's, AND since the tire choice is smaller in diameter than either, I conclude that everything should fit.

So, once again, does this make any kind of sense?

Worldsailor


Sanity check, I have come closer to the strut than I think anyone else has before without rubbing. It seems your chart reads the opposite way. a +35 offset sticks out further from the fender than a +45 offset because you're moving the Center of the wheel out 10mm, not the wheel and tire.

It looks like your chart is backwards maybe? Of course, maybe I"m just crazy and reading it wrong and you're right on target. A very likely case...PaulJ is the tiremaster if I recall correctly :)

I do have my clearance pics posted somewhere up on the EOC if you can find them.

WorldSailor
05-17-2005, 04:24 PM
I appreciate your diligence Snarf77 (still haven't spent that big pile o' Ben Franklins yet). I'm using the offset caculator at http://www.1010tires.com/WheelOffsetCalculator.asp. When I enter the stock measurements on the top line - 6.5 and 45, and your wheel measurements on the bottom line - 8 and 45, the calculator tells me that the inside clearance will be reduced by 19mm and the outside of the wheel will protrude an additional 19mm. I thought that I had checked this several times, but I obviously screwed up. I swapped seanneal's and your Strut-C values. I've edited my previous post to correct both the table and my conclusions.

Please check it again for (both our) sanity's sake.

WorldSailor

WorldSailor
05-17-2005, 04:49 PM
Hey Snarf77 -

I found the pics of your wheels in here:
http://www.elementownersclub.com/forums/showthread.php?t=11987. I can understand how you might not have remembered when you posted them since it was St. Paddy's Day :-)

They really do look great! Mine should be a little farther away from the strut (9mm) and stick out of the wheel wells 3mm less - I think... Just wish I could use the St. Paddy's Day excuse ;-)

WorldSailor