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Is there an objective test that I can use to determine the deterioration of my running shoes cushioning? I follow the rule of thumb and replace my shoes after about 500km. But some shoes feel like the cushioning deteriorate faster than others.

Edit: In the answers, outsole and cushioning height is mentioned. While the outsole of my shoe is somehow noticable, how would I measure the cushioning height? From the side and the back, new and old shoe look the same. However measuring depth of the shoe inside, it looks like there is 3mm difference!

My new shoe (0km, bottom/left) vs. old shoe (500km+), outsole comparison and heel height comparison. The old shoe cushioning feels worse only after some distance (few km). I am a midfoot striker and run on the road.

Is there an objective test that I can use to determine the deterioration of my running shoes cushioning? I follow the rule of thumb and replace my shoes after about 500km. But some shoes feel like the cushioning deteriorate faster than others.

Edit: In the answers, outsole and cushioning height is mentioned. While the outsole of my shoe is somehow noticable, how would I measure the cushioning height? From the side and the back, new and old shoe look the same. However measuring depth of the shoe inside, it looks like there is 3mm difference!

My new shoe (0km, bottom/left) vs. old shoe (500km+), outsole comparison and heel height comparison. The old shoe cushioning feels worse only after some distance (few km). I am a midfoot/heel striker and run on the road.

Note that the shoes are not perfectly size-aligned on the second image.

Is there an objective test that I can use to determine the deterioration of my running shoes cushioning? I follow the rule of thumb and replace my shoes after about 500km. But some shoes feel like the cushioning deteriorate faster than others.

Edit: In the answers, outsole and cushioning height is mentioned. While the outsole of my shoe is somehow noticable, how would I measure the cushioning height? From the side and the back, new and old shoe look the same.

My new shoe (0km, bottom/left) vs. old shoe (500km+), outsole comparison and heel height comparison. The old shoe cushioning feels worse only after some distance (few km). I am a midfoot striker and run on the road.

Is there an objective test that I can use to determine the deterioration of my running shoes cushioning? I follow the rule of thumb and replace my shoes after about 500km. But some shoes feel like the cushioning deteriorate faster than others.

Edit: In the answers, outsole and cushioning height is mentioned. While the outsole of my shoe is somehow noticable, how would I measure the cushioning height? From the side and the back, new and old shoe look the same. However measuring depth of the shoe inside, it looks like there is 3mm difference!

My new shoe (0km, bottom/left) vs. old shoe (500km+), outsole comparison and heel height comparison. The old shoe cushioning feels worse only after some distance (few km). I am a midfoot striker and run on the road.

Is there an objective test that I can use to determine the deterioration of my running shoes cushioning? I follow the rule of thumb and replace my shoes after about 500km. But some shoes feel like the cushioning deteriorate faster than others.

Is there an objective test that I can use to determine the deterioration of my running shoes cushioning? I follow the rule of thumb and replace my shoes after about 500km. But some shoes feel like the cushioning deteriorate faster than others.

Edit: In the answers, outsole and cushioning height is mentioned. While the outsole of my shoe is somehow noticable, how would I measure the cushioning height? From the side and the back, new and old shoe look the same.

My new shoe (0km, bottom/left) vs. old shoe (500km+), outsole comparison and heel height comparison. The old shoe cushioning feels worse only after some distance (few km). I am a midfoot striker and run on the road.