Tire & Wheel Measurements - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Afirehawk1 · 08-28-2018, 04:12 PM

Working on a 66 C10 with Western Chassis 2.5 inch drop spindles and 4 inch rear drop springs.

I went to the Summitt Racing website where have you take measurements of numerous positions for both front and back.

Trying to decifer how to use these measurements when specing out wheels and tires. I really would like to use 20x10 in the rear but only assuming 20x8.5 in the front. Bolt pattern is 5x5

forestb · 08-28-2018, 05:06 PM

Working on a 66 C10 with Western Chassis 2.5 inch drop spindles and 4 inch rear drop springs.

Is that 4 in the rear and 2.5 up front or 6.5 up front?

Afirehawk1 · 08-28-2018, 07:29 PM

Front 2.5 drop spindles, standard springs
Rear 4 inch drop springs

Afirehawk1 · 08-29-2018, 11:14 AM

any suggestions?

Afirehawk1 · 08-29-2018, 02:41 PM

any suggestions?

forestb · 08-29-2018, 03:01 PM

Do you have a step side or fleet side?

I had a set of 275/50R17s on my 62 stepside with a 4 inch drop and they fit fine. I don't know how that compares to what wheel and tire you are planning on putting on but I hope it helps. Stepsides have different spacing than fleetsides.

If I were you I would look at the static drops thread and find a truck you like and ask the owner what they are running.

Afirehawk1 · 08-29-2018, 03:50 PM

Stepside.
thanks for the input.

08-28-2018, 04:12 PM	#1
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Tire & Wheel Measurements Working on a 66 C10 with Western Chassis 2.5 inch drop spindles and 4 inch rear drop springs. I went to the Summitt Racing website where have you take measurements of numerous positions for both front and back. Trying to decifer how to use these measurements when specing out wheels and tires. I really would like to use 20x10 in the rear but only assuming 20x8.5 in the front. Bolt pattern is 5x5

08-28-2018, 05:06 PM	#2
forestb Registered User Join Date: Jan 2009 Location: Burbank, CA Posts: 3,619	Re: Tire & Wheel Measurements Working on a 66 C10 with Western Chassis 2.5 inch drop spindles and 4 inch rear drop springs. Is that 4 in the rear and 2.5 up front or 6.5 up front?

08-28-2018, 07:29 PM	#3
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: Tire & Wheel Measurements Front 2.5 drop spindles, standard springs Rear 4 inch drop springs

08-29-2018, 11:14 AM	#4
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: Tire & Wheel Measurements - need help please any suggestions? Last edited by Afirehawk1; 08-29-2018 at 02:40 PM.

08-29-2018, 02:41 PM	#5
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: Tire & Wheel Measurements - need help please any suggestions?

08-29-2018, 03:01 PM	#6
forestb Registered User Join Date: Jan 2009 Location: Burbank, CA Posts: 3,619	Re: Tire & Wheel Measurements Do you have a step side or fleet side? I had a set of 275/50R17s on my 62 stepside with a 4 inch drop and they fit fine. I don't know how that compares to what wheel and tire you are planning on putting on but I hope it helps. Stepsides have different spacing than fleetsides. If I were you I would look at the static drops thread and find a truck you like and ask the owner what they are running.

08-29-2018, 03:50 PM	#7
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: Tire & Wheel Measurements Stepside. thanks for the input.

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