atillathetom

Hello,

I posted the other day that I had finally pulled to trigger on some 20" OEM Style 101s from a 7er. They are AWESOME looking. 20x9 and 20x10 with 24 offsets front and rear. I went with 245/35 and 275/30 Falken 452s based on the advice of the owner of the tire shop and some well respected board members. I had suggested I wanted 245-255/30 front and 285/20 rear. He told me that those sizes would produce a terrible ride and guaranteed the fitment of the sizes he reccommended. I am amazed how well they ride and the grip seems endless. I have two issues.

1) The front tires are rubbing a bit. Only when I have the wheel turned slightly and go over a dip or incline that causes the chassis to roll. It is a brief "scuffing" sound. I went back to the tire shop and told the owner. He offered to roll the front fenders for free and assured me that it would cure the problem. After a free light fender roll, sure enough....they still rub. I have two choices at this point as far as I see. a) Live with it or b)He offered to swap them for 245 or 255/30/20 and 285/25/20 at no charge. He is really trying to work with me on this and I am impressed with his dedication.

2) The rear tires (275/30/20)look really stretched. When you stand behind the car you can see a little of the wheel hanging over. While I know some people like this look, I don't. Would a 285/25 fix this?

For those of you that run 245/30 and 285/25 does your ride suck?

I know these topics have been discussed numerous times but I could really use some sound advice.

Thanks,

Tom

TAJARO

Just do the math Tom- many members (me too) run 285/35-19 rears with sport package and zero rubbing. If you went to 285/30-20 that diameter is SMALLER then the 19 inch 35 profile- so you should not have any problem. The front is definitely an issue on mine- but 245/35-19 is known to be fine. So if you drop to 245/30-20 you should be good, even more so if you roll the fenders.

For rears:

285/35-19 ==> 285mm * .35% * 2 = 199.5mm plus a 19 inch rim (19 * 25.4 = 482.6mm) = 682.1mm (or 26.85 inches diameter)

285/30-20 ==> 285mm * .30% * 2 = 171mm plus a 20 inch rim (20 * 25.4 = 508mm) = 679mm (or 26.75 inches diameter)


For fronts:
245/35-19 ==> 245mm * .35% * 2 = 171.5mm plus a 19 inch rim (19 * 25.4 = 482.6mm) = 654.1mm (or 25.75 inches diameter)

245/30-20 ==> 245mm * .30% * 2 = 147mm plus a 20 inch rim (20 * 25.4 = 508mm) = 655mm (or 25.75 inches diameter)

Your tire dealer sounds like a great guy- good luck.

atillathetom

Very Helpful, thanks. I was using online calculators and it definitely is a numbers game.

I am very torn...

The shop owner is super cool and mostly interested in my satisfaction. I am thinking that I will do down to a 245/30/20 even though I like the idea of the extra rubber. I am surprised how many folks run 245/35/20 with no issues. I would think since I am running a fairly safe offset (24) that i would be OK too. I can only assume that fact that the fronts are 20x9 is what is causing my problems. Perhaps my struts are loosing their lust for life at 50K miles?

For the front, I think I either drop to a 245/30 or deal with occational rubbing. i dont like the idea of my tire taking paint from the inside of my fender. Just seems half assed.

As for the rears, I would like to do a 285/30/20 but I am concerned that I will rub. The last thing I want to do is cause another problem by going with more rubber. Also, would the lower pro front and meatier rear cause any issues? Perhaps the 285/25 might be better.

Any advice you have is appreciated.

Thanks,

Tom

545felix

yes, but you are running on different wheels with different offsets than he is, so you might have a little more room to play with. I'd recommend the 245/30 and 285/25 combo, maybe 255/30 on the front if they don't rub the struts or fenders.

TAJARO

My 101Ms are stock 20mm offsets and with 245/35-19 it's not an issue. He's running 24 (now that I re-read his post) so maybe there is an issue of 4mm? That's awfully small difference but maybe a 10mm spacer would solve it also...

atillathetom

According to my math, 20x9 et24 sticks out 5mm more than a 20x8.5 et 24 would. I believe this to be the problem. I have an appointment at the tire store tomorrow morning to come up with a final game plan. The owner is interested in discovering the perfect tire for this scenario. I might try 255/30/20 and 285/25/20. The fronts would be 26in diam vs 26.8 now.

The rears I think I will try 285/30/20 which is 26.7in diam. This is only .2 larger than the 275/30/30. This should would well.

Front and rear will be 2.7% different.

Thoughts?

Tom

TAJARO

It's great that your guy is interested and cooperating Tom- I'm sure you'll solve it. Other members report that 255 rubs too much up front but maybe with your offsets you can get by. Also if you're rubbing on the inner side due to 24mm offsets you could try a 10mm spacer which gives you net 14mm offset- very close to stock.

Keep us informed- thanks and good luck.

atillathetom

I just got back from the tire guy. By the way, those of you in San Diego, call Omar at San Diego Tire and Wheel. He has been outstanding.

They saw another small "hotspot" on the fender where it meets the bumper and rolled it a little more. Again, the owner was super cool. He said if it didnt fix it he would take all 4 tires off and replace with the 240/30/20 and 285/25/20 combo.

I also told him that I didnt much like the look of the 275/30/20. He agreed to try 285/30/20 if the fronts that are on there are finilly rub free. More to come after I test these 245/35/20s a little today.

Tom

god_003

i think 245/30 would work better

:l

im gonna get 255/30/20 once my new wheels come in

with small spacers there shouldnt be any rubbing

even then slight rubbing can be expected when going to a larger wheel and tire combo...

especially over bumps and dips

egh

SmG-Deuce

i just a set of beyern baroque would 255/35/20 rubb i have sport package also