Tire size question.

**Rlugo87** · 04-16-2017

Hi guys,

I got some new wheels for my 01 gt. They are on the car right now with 2 new goodyear g force sport 245/45/18's up front and rear. Now the rears are shot so i happen to have 2 brand new 245/50/18's in the same g force sports that iv had sitting in storage since last year. Will these fit in the rear without rubbing the strut? The 245/45/18's in the rear only have about a half inch or a bit more clearance from the strut. Im ok with the rear tire being .96 inch taller than the front as this will fill the larger ammount of wheel gap i have in the rear after my drop springs got put in. Thanks guys.

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**Fivefingerdeathpunch** · 04-16-2017

It's over 3% different and I would not do it.

Very possible it will toss the ABS light because of the difference in wheel speed. Just sell those two tires and buy 2 tires that are the right size.

**Rlugo87** · 04-16-2017

My abs light has been on for 2 years lol. But ok. Ill just buy 2 tires tomorrow and ditch these ones. Ill get you guys some pictures tomorrow of my new set up, but im loving the 18's with my drop.

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**LEVELX** · 04-17-2017

A 245/45-18 tire is the same width as a 245/50-18 tire.
Hence the 245 designation.
The only difference is the sidewall height. 45 vs. 50.

	245/45-18	245/50-18	Difference
Diameter inches (mm)	26.68 (677.7)	27.65 (702.2)	0.96 (24.5) 3.6%
Width inches (mm)	9.65 (245)	9.65 (245)	0 (0) 0%
Circum. inches (mm)	83.82 (2129.06)	86.85 (2206.03)	3.03 (76.97) 3.6%
Sidewall Height inches (mm)	4.34 (110.25)	4.82 (122.5)	0.48 (12.25) 11.1%
Revolutions per mile (km)	755.9 (469.69)	729.52 (453.3)	-26.37 (-16.39) -3.5%